add ga python check

.github/workflows/python2.yml

@@ -0,0 +1,18 @@
+# generated by `./generate_action_config.py noetic`
+# jsk_travis
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: check_python2
+
+    container: ubuntu:20.04
+
+    steps:
+      - name: Chcekout
+        uses: actions/checkout@v2
+      - name: Check Python2
+        run: |
+          apt update -q && apt install -y -q python2
+          python2 -m compileall .

.github/workflows/python3.yml

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+# generated by `./generate_action_config.py noetic`
+# jsk_travis
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: check_python3
+
+    container: ubuntu:20.04
+
+    steps:
+      - name: Install latest git to download .git directory in actions/checkout@v2 ( use sudo for ros-ubuntu )
+        run: apt-get update && apt-get install -y software-properties-common && apt-get update && add-apt-repository -y ppa:git-core/ppa && apt-get update && apt-get install -y git
+      - name: work around permission issue  # https://github.com/actions/checkout/issues/760#issuecomment-1097501613
+        run: git config --global --add safe.directory $GITHUB_WORKSPACE
+      - name: Chcekout
+        uses: actions/checkout@v2
+      - name: Check Python3
+        run: |
+          apt update -q && apt install -y -q python3 git 2to3
+          bash -c "ret=0; trap 'ret=1' ERR; python3 -m compileall .; 2to3 -w -f except -f execfile -f has_key -f import -f raw_input -f zip .; git diff --exit-code . > /dev/null; echo Exitting with \$ret; exit \$ret"