ci: Allow flexible Rusk binary building in workflow

.github/workflows/rusk_build.yml

@@ -7,16 +7,24 @@ on:
         description: "Git branch, ref, or SHA to checkout"
         required: true
         default: "master"
+      runner:
+        description: "Choose runner target to build against (JSON array)"
+        required: true
+        default: "[\"ubuntu-24.04\", \"macos-15\", \"arm-linux\"]"
+      features:
+        description: "Choose features to build (JSON array)"
+        required: true
+        default: "[\"default\", \"archive\"]"
 
 jobs:
   build_and_publish:
     name: Build Rusk binaries for ${{ matrix.os }} (${{ matrix.features }})
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-24.04, macos-15, arm-linux]
+        os: ${{ fromJson(github.event.inputs.runner) }}
+        features: ${{ fromJson(github.event.inputs.features) }}
         compiler: [cargo]
-        features: [default, archive]
         include:
           - os: ubuntu-24.04
             target: linux-x64
@@ -26,6 +34,7 @@ jobs:
           - os: arm-linux
             target: linux-arm64
             flags: --target=aarch64-unknown-linux-gnu
+      fail-fast: false
 
     steps:
       - name: Checkout Repository