Add applicable project labels and ensure PRs have one of Task,Bug

Author: DavidSouther

.github/allowed-labels.yaml

@@ -0,0 +1,18 @@
+# Labels for tracking statistics and history
+- name: Task
+  color: f5f7f9
+  description: "A general update to the code base for language clarification, missing actions, tests, etc."
+- name: Bug
+  color: f5f7f9
+  description: "An update to fix incorrect code or typos."
+
+# Labels to visually distinguish special types of issues
+- name: Urgent
+  color: "00FFFF"
+  description: "Very important and needs attention"
+- name: Epic
+  color: "d8bfd8"
+  description: "Contains many smaller pieces to work on separately"
+- name: Internal
+  color: "f2bb22"
+  description: "To help track internal tickets in a single location."

.github/workflows/label_check.yml

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+name: Label Checker
+on: # yamllint disable-line rule:truthy
+  pull_request:
+    branches:
+      - main
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - labeled
+      - unlabeled
+
+jobs:
+  check_stats_labels:
+    name: Check Stats labels
+    runs-on: ubuntu-latest
+    steps:
+      - uses: docker://agilepathway/pull-request-label-checker:latest
+        with:
+          one_of: Task,Bug
+          repo_token: ${{ secrets.GITHUB_TOKEN }}