Add slash command dispatch workflow and blacktest workflow

.github/workflows/slashcommands.yml

@@ -0,0 +1,14 @@
+name: Slash Command Dispatch
+on:
+  issue_comment:
+    types: [created]
+jobs:
+  slashCommandDispatch:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Slash Command Dispatch
+        uses: peter-evans/slash-command-dispatch@v3
+        with:
+          token: ${{ secrets.PAT }}
+          commands: |
+            test

.github/workflows/test.yml

@@ -0,0 +1,11 @@
+name: blacktest
+on:
+  repository_dispatch:
+    types: [test-command]
+
+jobs:
+    lint:
+        runs-on: ubuntu-latest
+        steps:
+        - uses: actions/checkout@v3
+        - uses: psf/black@stable