Add GitHub publish workflow

Author: ArcaneNibble

.github/workflows/build.yml

@@ -1,5 +1,8 @@
+name: Build
+
 on:
     - push
+    - workflow_call
 
 jobs:
     build:

.github/workflows/publish.yml

@@ -0,0 +1,26 @@
+name: Build and Publish
+
+on:
+  push:
+    tags:
+      - v*
+
+jobs:
+    call-build:
+        uses: ./.github/workflows/build.yml
+    
+    publish:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/download-artifact@v4
+              with:
+                name: pru_ledpwm
+            
+            - name: Publish
+              env:
+                GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+                tag: ${{ github.ref_name }}
+              run: |
+                gh release create "$tag" pru_ledpwm.* \
+                    --repo="$GITHUB_REPOSITORY" \
+                    --generate-notes