Add Angular bindings

[alexonaci]

Very much Work in Progress

• Added the bindings under client/typescript/frameworks with own package.json and tsconfig.json to comply with the Angular Package Format: https://angular.io/guide/angular-package-format
• Excluded the angular sources from tsup build because they require a different compilation - using the angular compiler and ng-packagr
• Added example project under examples/web-wa-sqlite-angular
• The goal is to have signal-based bindings for the electricClient and to have maybe a similar structure with the TanStack Query Angular adapter: https://tanstack.com/query/v5/docs/framework/angular/overview, https://github.com/TanStack/query/tree/main/packages/angular-query-experimental/src - although is not quite idiomatic for the Angular ecosystem (yet) to have custom inject functions (like injectLiveQuery or injectConnectivityState) they seem to fit well in the current structure and I think they would improve the developer experience. But please let me know what you think