eslint-plugin-rxjs-angular (updated for ESLint v9)

Fork of cartant's eslint-plugin-rxjs-angular updated for ESLint v9 compatibility. Current version 1.0.50. Provides three opinionated ESLint rules for enforcing RxJS best practices in Angular components: prefer-async-pipe (forbids calling subscribe in components), prefer-composition (forbids non-composed subscribe calls), and prefer-takeuntil (forbids subscribe without takeUntil). Requires @typescript-eslint/parser and TypeScript project configuration. Not recommended for new projects; prefer the original package if ESLint v8 is acceptable.