add workflow to build all Rust apps for every PR

.github/workflows/build_all_apps.yml

@@ -0,0 +1,80 @@
+name: Build all Rust apps
+
+on:
+    workflow_dispatch:
+        inputs:
+            sdk_branch:
+                type: string
+                required: false
+                default: ''
+    pull_request:
+
+env:
+    repo_list: '
+{\"repo_name\":[
+\"app-mobilecoin\",
+\"app-radix-babylon\",
+]}
+'
+
+jobs:
+    prepare-matrix:
+        runs-on: ubuntu-latest
+        outputs:
+            matrix: ${{ steps.set-matrix.outputs.matrix }}
+        steps:
+            - id: set-matrix
+              run: echo "matrix=${{  env.repo_list  }}" >> $GITHUB_OUTPUT
+
+    test-build:
+        name: Build for all targets
+        needs: [prepare-matrix]
+        strategy:
+            fail-fast: false
+            matrix:
+                ${{ fromJSON(needs.prepare-matrix.outputs.matrix) }}
+        runs-on: ubuntu-latest
+        container:
+            image: ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder:latest
+        steps:
+            - name: Clone App
+              uses: actions/checkout@v4
+              with:
+                repository: LedgerHQ/${{ matrix.repo_name }}
+                submodules: true
+                ref: 'develop'
+                path: ${{ matrix.repo_name }}
+
+            - name: Build Path and Targets
+              run: |
+                cargo +$RUST_STABLE install toml-cli
+                cd ${{ matrix.repo_name }}
+                build_path=$(toml get ledger_app.toml app.build_directory)
+                echo "build_path=$build_path" >> $GITHUB_ENV
+                for device in nanos "nanos+" nanox; do
+                    build_device=$(toml get ledger_app.toml app.devices | grep -o "\"$device\"" | sed 's/"/'/g | sed 's/+/plus/')
+                    if [ -n "$build_device" ]; then
+                        echo "build_${build_device}=true" >> $GITHUB_ENV
+                    fi
+                done
+            
+            - name: Build NanoS
+              if: ${{ env.build_nanos == 'true' }}
+              run: | 
+                cd ${{ matrix.repo_name }}
+                cd ${{ env.build_path }}
+                echo "Build for Nano S"
+            
+            - name: Build NanoX
+              if: ${{ env.build_nanox == 'true' }}
+              run: |  
+                cd ${{ matrix.repo_name }}
+                cd ${{ env.build_path }}
+                echo "Build for Nano X"
+            
+            - name: Build NanoS+
+              if: ${{ env.build_nanosplus == 'true' }}
+              run: |  
+                cd ${{ matrix.repo_name }}
+                cd ${{ env.build_path }}
+                echo "Build for Nano S+"