add standardized github labels and update action

.github/labels.yml

@@ -0,0 +1,59 @@
+- name: "bug"
+  color: "d73a4a"
+  description: "Something isn't working"
+
+- name: "documentation"
+  color: "0075ca"
+  description: "Improvements or additions to documentation"
+
+- name: "duplicate"
+  color: "cfd3d7"
+  description: "This issue or pull request already exists"
+
+- name: "enhancement"
+  color: "a2eeef"
+  description: "New feature or request"
+
+- name: "good first issue"
+  color: "7057ff"
+  description: "Good for newcomers"
+
+- name: "help wanted"
+  color: "008672"
+  description: "Extra attention is needed"
+
+- name: "invalid"
+  color: "e4e669"
+  description: "This doesn't seem right"
+
+- name: "keep alive"
+  color: "666666"
+  description: "exempt issue from staleness checks"
+  from_name: "keep alive"
+
+- name: "project proposal"
+  color: "d876e3"
+  description: "project proposal for interns and GSoC students"
+
+- name: "question"
+  color: "d876e3"
+  description: "Further information is requested"
+
+- name: "rfc"
+  color: "d876e3"
+  description: "Request for comments"
+
+- name: "stale"
+  color: "777777"
+  description: "Issue is stale and subject to automatic closing"
+  from_name: "Stale"
+
+- name: "stale closed"
+  color: "444444"
+  description: "Issue was closed automatically due to inactivity"
+  from_name: "stale-closed"
+
+- name: "won't fix"
+  color: "ffffff"
+  description: "This will not be worked on"
+  from_name: wontfix

.github/workflows/labels.yml

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+name: github
+
+on:
+  push:
+    branches:
+      - 'main'
+    paths:
+      - '.github/labels.yml'
+      - '.github/workflows/labels.yml'
+
+jobs:
+  labeler:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Run Labeler
+        uses: crazy-max/ghaction-github-labeler@v4
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          yaml-file: .github/labels.yml