Added caching and artifacts to workflow (#2)

* Added caching and artifacts to workflow

.github/workflows/rust.yml

@@ -16,5 +16,25 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
+    - name: Cache Rust packages
+      uses: actions/cache@v3
+      with:
+        key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('Cargo.lock') }}
+        path: |
+          ~/.cargo
     - name: Build
       run: cargo build --verbose --release
+    - name: Install elf2uf2-rs
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libudev-dev 
+        cargo install elf2uf2-rs
+    - name: Generate uf2 file
+      run: elf2uf2-rs -v target/thumbv6m-none-eabi/release/subtone
+    - name: Archive production artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: firmware-binaries
+        path: |
+          target/thumbv6m-none-eabi/release/subtone
+          target/thumbv6m-none-eabi/release/subtone.uf2

Cargo.toml

@@ -66,10 +66,7 @@ incremental = false
 lto = 'fat'
 opt-level = 's'
 overflow-checks = false
-
-[profile.release-no-debug]
-inherits = "release"
-debug=false
+strip = 'debuginfo'
 
 # do not optimize proc-macro crates = faster builds from scratch
 [profile.dev.build-override]