trying to add auto-labeler + fix auto-review actionAuto label (#63)

* adds auto-label job, possibly fixes auto-review job

.github/auto-label.json

@@ -0,0 +1,6 @@
+{
+  "rules": {
+    "frontend": ["webapp/"],
+    "backend": ["*.go"]
+  }
+}

.github/workflows/auto-label.yml

@@ -0,0 +1,17 @@
+name: Auto Label
+on:
+  pull_request_target:
+    types: [opened, synchronize]
+
+jobs:
+  auto-label:
+    name: Auto Label
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{github.event.pull_request.head.ref}}
+          repository: ${{github.event.pull_request.head.repo.full_name}}
+      - uses: banyan/auto-label@1.2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/auto-request-review.yml

@@ -2,7 +2,7 @@
 name: Auto Request Review
 
 on:
-  pull_request:
+  pull_request_target:
     types: [opened, ready_for_review, reopened]
 
 jobs:
@@ -13,5 +13,5 @@ jobs:
       - name: Request review based on files changes and/or groups the author belongs to
         uses: necojackarc/auto-request-review@v0.4.0
         with:
-          token: ${{ secrets.AUTO_REVIEW_GITHUB_TOKEN }}
+          token: ${{ secrets.GITHUB_TOKEN }}
           config: .github/reviewers.yml # Config file location override