RP2350 Template (#20)

* rp 2350 template

* elf2uf2rs removed

* Added the comment back since it looks like support is close?

Author: fatfingers23

templates/rp2350/.cargo/config.toml

@@ -0,0 +1,17 @@
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+# If you have an SWD debugfer, you can uncomment this line:
+# runner = "probe-rs run --chip RP235x --speed 12000 --protocol swd"
+
+# If you don't, you can put the pico into the USB loader, and use this
+# line instead:
+runner = "picotool load -x -t elf"
+
+[build]
+target = "thumbv8m.main-none-eabihf"
+
+[env]
+DEFMT_LOG = "debug"
+
+[unstable]
+build-std = ["core"]
+build-std-features = ["panic_immediate_abort"]