feat: fix typos nightly

.github/.codespellignore

@@ -0,0 +1,6 @@
+cips
+pullrequest
+nmt
+namespaces
+namespace
+das

.github/workflows/spell_check.yml

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+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="*.pulsar.go,*.pb.go,*.pb.gw.go,*.cosmos_orm.go,*.json,*.git,*.js,crypto/keys,fuzz,*.h,proto/tendermint" --ignore-words=.github/.codespellignore
+      - uses: peter-evans/create-pull-request@v5
+        with:
+          token: ${{ secrets.PAT_CREATE_PR }}
+          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.