added dependency management with poetry; added github action "on tag …

…create release"

.github/workflows/on-tag-create-release.yaml

@@ -0,0 +1,26 @@
+name: On Tag Create Release
+
+on:
+  push:
+    tags:
+      # - "[0-9]+.[0-9]+.[0-9]+"
+      - "*"
+
+jobs:
+  build:
+    name: Create Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get Current Date
+        run: echo "TODAY=$(date +'%Y-%m-%d')" >> $GITHUB_ENV  # get date and save in environment variables, access with "${{ env.TODAY }}"
+
+      - name: Create Release
+        uses: actions/create-release@v1                                 # function that creates release, if fails with "Resource not accessible by integration": repository "Settings", "Actions", "General", "Workflow permissions", set "Read and write permissions", "Save"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}                     # token is provided by Github Actions
+        with:                                                           # parameters
+          tag_name: ${{ github.ref }}                                   # release tag
+          release_name: ${{ env.TODAY }} Metric METAR for Discord ${{ github.ref }} # release title
+          body: 
+          draft: false
+          prerelease: false