[nrf noup] Use "continue-on-error" for examples in CI

Make building nRF Connect examples optional in github
workflows in a sense that they do not fail the workflow
if they do not compile. The reason is that the CI is often
run for downstream patches, that are required to proceed
with changes in NCS or Zephyr and we do not want to force
developers to update examples in sdk-connectedhomeip at
that moment - they will be updated in the upstream later.

Signed-off-by: Damian Krolik <damian.krolik@nordicsemi.no>

Author: Damian-Nordic

.github/workflows/examples-nrfconnect.yaml

@@ -83,11 +83,13 @@ jobs:
             - name: Update nRF Connect SDK revision to the currently recommended.
               timeout-minutes: 15
               run: scripts/run_in_build_env.sh "python3 scripts/setup/nrfconnect/update_ncs.py --update --shallow"
+              continue-on-error: true
             - name: Run unit tests of factory data generation script
               timeout-minutes: 15
               run: scripts/run_in_build_env.sh "./scripts/tools/nrfconnect/tests/test_generate_factory_data.py"
             - name: Build example nRF Connect SDK Lock App on nRF52840 DK
               if: github.event_name == 'push' || steps.changed_paths.outputs.nrfconnect == 'true'
+              continue-on-error: true
               timeout-minutes: 15
               run: |
                   scripts/examples/nrfconnect_example.sh lock-app nrf52840dk_nrf52840
@@ -97,6 +99,7 @@ jobs:
                     /tmp/bloat_reports/
             - name: Build example nRF Connect SDK Lighting App on nRF52840 DK
               if: github.event_name == 'push' || steps.changed_paths.outputs.nrfconnect == 'true'
+              continue-on-error: true
               timeout-minutes: 15
               run: |
                   scripts/examples/nrfconnect_example.sh lighting-app nrf52840dk_nrf52840
@@ -106,6 +109,7 @@ jobs:
                     /tmp/bloat_reports/
             - name: Build example nRF Connect SDK Lighting App on nRF52840 Dongle
               if: github.event_name == 'push' || steps.changed_paths.outputs.nrfconnect == 'true'
+              continue-on-error: true
               timeout-minutes: 15
               run: |
                   scripts/examples/nrfconnect_example.sh lighting-app nrf52840dongle_nrf52840 -DCONF_FILE=prj_no_dfu.conf -DCONFIG_CHIP_ROTATING_DEVICE_ID=y
@@ -115,6 +119,7 @@ jobs:
                     /tmp/bloat_reports/
             - name: Build example nRF Connect SDK Lighting App on nRF52840 DK with RPC
               if: github.event_name == 'push' || steps.changed_paths.outputs.nrfconnect == 'true'
+              continue-on-error: true
               timeout-minutes: 20
               run: |
                   scripts/examples/nrfconnect_example.sh lighting-app nrf52840dk_nrf52840 -DOVERLAY_CONFIG=rpc.overlay
@@ -124,6 +129,7 @@ jobs:
                     /tmp/bloat_reports/
             - name: Build example nRF Connect SDK Shell on nRF52840 DK
               if: github.event_name == 'push' || steps.changed_paths.outputs.shell == 'true'
+              continue-on-error: true
               timeout-minutes: 15
               run: |
                   scripts/examples/nrfconnect_example.sh shell nrf52840dk_nrf52840
@@ -133,6 +139,7 @@ jobs:
                     /tmp/bloat_reports/
             - name: Build example nRF Connect SDK Pigweed on nRF52840 DK
               if: github.event_name == 'push' || steps.changed_paths.outputs.pigweed-app == 'true'
+              continue-on-error: true
               timeout-minutes: 15
               run: |
                   scripts/examples/nrfconnect_example.sh pigweed-app nrf52840dk_nrf52840
@@ -142,6 +149,7 @@ jobs:
                     /tmp/bloat_reports/
             - name: Build example nRF Connect SDK Lock App on nRF5340 DK
               if: github.event_name == 'push' || steps.changed_paths.outputs.nrfconnect == 'true'
+              continue-on-error: true
               timeout-minutes: 15
               run: |
                   scripts/examples/nrfconnect_example.sh lock-app nrf5340dk_nrf5340_cpuapp
@@ -151,6 +159,7 @@ jobs:
                     /tmp/bloat_reports/
             - name: Build example nRF Connect SDK Lighting App on nRF5340 DK
               if: github.event_name == 'push' || steps.changed_paths.outputs.nrfconnect == 'true'
+              continue-on-error: true
               timeout-minutes: 15
               run: |
                   scripts/examples/nrfconnect_example.sh lighting-app nrf5340dk_nrf5340_cpuapp
@@ -160,6 +169,7 @@ jobs:
                     /tmp/bloat_reports/
             - name: Build example nRF Connect SDK Pump App on nRF52840 DK
               if: github.event_name == 'push' || steps.changed_paths.outputs.nrfconnect == 'true'
+              continue-on-error: true
               timeout-minutes: 15
               run: |
                   scripts/examples/nrfconnect_example.sh pump-app nrf52840dk_nrf52840
@@ -169,6 +179,7 @@ jobs:
                     /tmp/bloat_reports/
             - name: Build example nRF Connect SDK Pump Controller App on nRF52840 DK
               if: github.event_name == 'push' || steps.changed_paths.outputs.nrfconnect == 'true'
+              continue-on-error: true
               timeout-minutes: 15
               run: |
                   scripts/examples/nrfconnect_example.sh pump-controller-app nrf52840dk_nrf52840
@@ -177,6 +188,7 @@ jobs:
                     examples/pump-controller-app/nrfconnect/build/zephyr/zephyr.elf \
                     /tmp/bloat_reports/
             - name: Build example nRF Connect SDK All Clusters App on nRF52840 DK
+              continue-on-error: true
               timeout-minutes: 20
               run: |
                   scripts/examples/nrfconnect_example.sh all-clusters-app nrf52840dk_nrf52840 -DCONF_FILE=prj_dfu.conf