TypeScript CLI tsgen skill

Role of this repo

Plugin for csdx: implements TypeScriptCodeGeneratorCommand in src/commands/tsgen.ts.
Generation is delegated to @contentstack/types-generator (npm, GitHub)—version ^3.9.3 in package.json. Do not assume a local clone; use npm and published source only.

Concern	Where
New flags, output path, `csdx` UX, `printFormattedError`	This repo (`src/commands/`, `src/lib/`)
Schema mapping, Delivery SDK calls, GraphQL introspection	`@contentstack/types-generator`

src/lib/helper.ts: sanitizePath, printFormattedError (FormattedError, error_code switch).
src/types/index.ts: StackConnectionConfig and related CLI types.