fix: declare root bundled runtime dependencies

[mturac]

Summary

• Add the runtime packages imported by the root package's bundled CLI/server/client files to the root package dependencies.
• Keep the published mcp-inspector bin usable with strict package managers, where the root package cannot rely on dependencies declared only by sibling workspace packages.

Fixes #1513.
Addresses #873.

Verification

• npm install --package-lock-only (ran the repository prepare build successfully)
• npm run build
• npm run prettier-check
• npm run test-cli (85 tests passed)
• git diff --check
• Packed the root package with npm pack --ignore-scripts --json, installed the tarball into a temporary pnpm project, verified the root package can resolve commander, cors, express, express-rate-limit, and serve-handler, and ran ./node_modules/.bin/mcp-inspector --help successfully