Remove Github Actions and move issue templates to folder usable by Gitlab

.github/workflows/develop.yml

-name: Continuous develop build
-on:
-  push:
-    branches:
-      - develop
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 0
-    - name: set up JDK 1.8
-      uses: actions/setup-java@v1
-      with:
-        java-version: 1.8
-    - name: Build with Gradle
-      run: |
-        mkdir -p /home/runner/.android && touch /home/runner/.android/repositories.cfg
-        ./gradlew assembleDebug
-    - name: Create release
-      uses: eine/tip@gha-tip
-      with:
-        token: ${{ secrets.GITHUB_TOKEN }}
-        cwd: ${{ github.workspace }}
-        files: app/build/outputs/apk/debug/app-debug.apk