chore: set up sonarlint (#10)

### Explanation

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### Issue

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### Attestations

- [ ] I have read and agree to the [Code of Conduct](https://docs.nhcarrigan.com/community/coc/)
- [ ] I have read and agree to the [Community Guidelines](https://docs.nhcarrigan.com/community/guide/).
- [ ] My contribution complies with the [Contributor Covenant](https://docs.nhcarrigan.com/dev/covenant/).

### Dependencies

- [ ] I have pinned the dependencies to a specific patch version.

### Style

- [ ] I have run the linter and resolved any errors.
- [ ] My pull request uses an appropriate title, matching the conventional commit standards.
- [ ] My scope of feat/fix/chore/etc. correctly matches the nature of changes in my pull request.

### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
- [ ] My contribution modifies existing code, and I have updated the tests to reflect these changes.
- [ ] All new and existing tests pass locally with my changes.
- [ ] Code coverage remains at or above the configured threshold.

### Documentation

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### Versioning

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Reviewed-on: https://codeberg.org/nhcarrigan/mod-bot/pulls/10
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

.gitignore

@@ -1,3 +1,4 @@
 /node_modules/
 /prod/
 .env
+.scannerwork

package.json

@@ -9,7 +9,8 @@
     "build": "tsc",
     "lint": "eslint src --max-warnings 0 && prettier src --check",
     "start": "op run --env-file='./prod.env' -- node prod/index.js",
-    "test": "echo 'no tests yet'"
+    "test": "echo 'no tests yet'",
+    "scan": "SONAR_TOKEN='op://Environment Variables - Development/SonarCloud/mod-bot' op run -- sonar-scanner -Dsonar.organization=nhcarrigan -Dsonar.projectKey=nhcarrigan_mod-bot -Dsonar.sources=. -Dsonar.host.url=https://sonarcloud.io"
   },
   "repository": {
     "type": "git",