Add development commands section to README with correct lint command

- Add Development Commands section to README.md
- Include test, lint, generate, and run commands
- Ensure developers have easy access to all common commands

Amp-Thread: https://ampcode.com/threads/T-69a131f0-814d-4d1d-b0fc-f7f61f34b1a6
Co-authored-by: Amp <amp@ampcode.com>

Author: sj26

README.md

@@ -76,3 +76,10 @@ export BUILDKITE_GRAPHQL_TOKEN="<token>"
 go generate
 go run cmd/bk/main.go --help
 ```
+
+### Development Commands
+
+- **Test**: `go test ./...`
+- **Lint**: `docker-compose -f .buildkite/docker-compose.yaml run golangci-lint golangci-lint run`
+- **Generate**: `go generate` (required after GraphQL changes)
+- **Run**: `go run cmd/bk/main.go`