Switching from CircleCI to GitHub Actions

.github/actions/setup-rust/action.yml

@@ -0,0 +1,17 @@
+name: Setup Rust
+description: Sets up Rust
+runs:
+  using: "composite"
+  steps:
+    - uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          target
+        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+
+    - name: Initialize Rustup
+      shell: bash
+      run: |
+        rustup show

.github/actions/setup-yarn/action.yml

@@ -0,0 +1,13 @@
+name: Setup Yarn
+description: Sets up Yarn
+runs:
+  using: "composite"
+  steps:
+    - uses: actions/setup-node@v4
+      with:
+        cache: 'yarn'
+
+    - name: yarn install
+      shell: bash
+      run: |
+        yarn install --immutable --check-cache

.github/actions/use-build/action.yml

@@ -0,0 +1,9 @@
+name: Use build
+description: Uses the build artifacts
+runs:
+  using: "composite"
+  steps:
+    - name: Download build
+      uses: actions/download-artifact@v4
+      with:
+        name: build