Add problem matching for gcc and nxstyle to github actions

.github/workflows/build.yml

@@ -179,6 +179,7 @@ jobs:
           BLOBDIR: /tools/blobs
         with:
           run: |
+            echo "::add-matcher::sources/nuttx/.github/gcc.json"
             cd sources/testing
             ./cibuild.sh -x testlist/${{matrix.boards}}.dat
 
@@ -230,5 +231,6 @@ jobs:
         run: git -C sources/nuttx fetch --tags
       - name: Run Builds
         run: |
+          echo "::add-matcher::sources/nuttx/.github/gcc.json"
           cd sources/testing
           ./cibuild.sh -i -x testlist/${{matrix.boards}}.dat

.github/workflows/check.yml

@@ -29,6 +29,7 @@ jobs:
 
     - name: Check Pull Request
       run: |
+        echo "::add-matcher::nuttx/.github/nxstyle.json"
         cd nuttx
         commits=`git log -1 --merges --pretty=format:%P | awk -F" " '{ print $1 ".." $2 }'`
         git log --oneline $commits