ci: Add matrix strategy for VSS authorizer variants

Run VSS integration tests against multiple server authorizer
configurations (noop, sigs, jwt). Each matrix job builds the
vss-server with the appropriate flags or features and passes
the corresponding cfg flag to the test runner.

- Use release builds for vss-server
- Add startup delay before running tests
- Pass authorizer-specific cfg flags for future test differentiation

Pending RSA keypair generation addressed in following commit

Author: enigbe

.github/workflows/vss-integration.yml

@@ -9,6 +9,9 @@ concurrency:
 jobs:
   build-and-test:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        authorizer: [noop, sigs, jwt]
 
     services:
       postgres:
@@ -39,10 +42,19 @@ jobs:
       - name: Build and Deploy VSS Server
         run: |
           cd vss-server/rust
-          cargo run server/vss-server-config.toml&
-      - name: Run VSS Integration tests
+          if [ "${{ matrix.authorizer }}" == "noop" ]; then
+            RUSTFLAGS="--cfg noop_authorizer" cargo build --release --no-default-features
+          elif [ "${{ matrix.authorizer }}" == "jwt" ]; then
+            # Todo: Generate RSA keypair, inject into config
+            cargo build --release
+          else
+            cargo build --release
+          fi
+          cargo run --release -- server/vss-server-config.toml &
+          sleep 2
+      - name: Run VSS Integration tests for ${{ matrix.authorizer }}
         run: |
           cd ldk-node
           export TEST_VSS_BASE_URL="http://localhost:8080/vss"
-          RUSTFLAGS="--cfg vss_test" cargo test io::vss_store
-          RUSTFLAGS="--cfg vss_test --cfg cycle_tests" cargo test --test integration_tests_vss
+          RUSTFLAGS="--cfg vss_test --cfg ${{ matrix.authorizer }}_auth_test" cargo test io::vss_store
+          RUSTFLAGS="--cfg vss_test --cfg cycle_tests --cfg ${{ matrix.authorizer }}_auth_test" cargo test --test integration_tests_vss