ci: add codespell nightly workflow (#1505)

* add codespell nightly workflow

* add new lines

.github/.codespellignore

@@ -0,0 +1,3 @@
+clienta
+connectiona
+sover

.github/workflows/codespell.yml

@@ -0,0 +1,28 @@
+name: Fix typos nightly
+
+on:
+  schedule:
+    - cron: "0 12 * * *"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run codespell
+        continue-on-error: true
+        run: |
+          sudo apt-get install codespell -y
+          codespell -w --skip="*.pb.go,*.pb.gw.go,*.json,*.git,*.js" --ignore-words=.github/.codespellignore
+      - uses: peter-evans/create-pull-request@v5
+        with:
+          token: ${{ secrets.PRBOT_PAT }}
+          commit-message: "chore: spelling errors fixes"
+          title: "chore: fix spelling errors"
+          branch: "bot/fix-typos"
+          delete-branch: true
+          body: |
+            This PR fixes typos in the codebase.
+            Please review it, and merge if everything is fine.
+            If there are proto changes, run `make proto-gen` and commit the changes.