ci: add pr labeler for x modules

Signed-off-by: Artur Troian <[email protected]>

.github/pr_labeler.yml

@@ -0,0 +1,18 @@
+"C:x/audit":
+  - x/audit/**/*
+"C:x/cert":
+  - x/cert/**/*
+"C:x/deployment":
+  - x/deployment/**/*
+"C:x/escrow":
+  - x/escrow/**/*
+"C:x/gov":
+  - x/gov/**/*
+"C:x/inflation":
+  - x/inflation/**/*
+"C:x/market":
+  - x/market/**/*
+"C:x/provider":
+  - x/provider/**/*
+"C:x/staking":
+  - x/staking/**/*

.github/workflows/pr_labeler.yml

@@ -0,0 +1,18 @@
+name: github
+on:
+  - pull_request_target
+
+permissions:
+  contents: read
+
+jobs:
+  pr-labeler:
+    permissions:
+      contents: read  # for actions/labeler to determine modified files
+      pull-requests: write  # for actions/labeler to add labels to PRs
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/labeler@main
+        with:
+          configuration-path: .github/pr_labeler.yml
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"