add hls-brittany-plugin test suite to CI

Author: pepeiborra

.github/workflows/test.yml

@@ -135,3 +135,9 @@ jobs:
         if: ${{ matrix.test }}
         run: LSP_TEST_LOG_COLOR=0 LSP_TEST_LOG_MESSAGES=true LSP_TEST_LOG_STDERR=true cabal test hls-tactics-plugin --test-options="-j1"
 
+      - name: Test brittany plugin
+        if: ${{ matrix.test }}
+        env:
+          HLS_TEST_EXE: hls
+          HLS_WRAPPER_TEST_EXE: hls-wrapper
+        run: cabal test hls-brittany-plugin || cabal test hls-brittany-plugin --test-options="-j1"