[PM-16231] Improved SDK referencing (#12475)

* feat: implement Rc

* feat: use Rc in sdk service

* docs: add an example to `take()`

* fix: clarify function doc

* Add custom eslint rule package with enforced `using` rule (#13009)

* feat: add custom eslint rule

* feat: check for `UsingRequired` instead of hardcoding `Rc`

* chore: move package to libs

* wip: add tests. Tests work when run from same folder but not from root

* fix: add dependencies to renovate

* fix: add empty ts file to avoid typechecking throwing errors

* fix: tests not running from root

* chore: remove unecessary config

* fix: linting

* docs: add readme

* chore: add platform ownership

* chore: clean up comment

* Add support for flat config to "Improved sdk referencing" (#13054)

* WIP flat config for eslint

* Add rxjs

* Configure vscode to use flat config

* Fix some new linting errors

* Remove directory overrides of .eslintrc

* Remove explicit dependencies on typescript-eslint/ and @angular-eslint/

* Add missing rules

* Add rxjs recommended rules

* Add storybook and enabled rxjs-angular rule

* Add buildNoRestrictedImports helper

* Ignore platform import restrictions

* Remove unused ignores

* feat: migrate rules over to .mjs and flat config

* feat: implement support for .mjs tests

* chore: remove old package approach

* chore: update package-lock

* fix: add empty TS file to stop errors

* chore: clean up comments

---------

Co-authored-by: Hinton <hinton@users.noreply.github.com>

* fix: update CODEOWNERS to match folder name

* fix: renovate.json after merge

* fix: package.json, pin versions, sort order

* fix: update package-lock.json

---------

Co-authored-by: Hinton <hinton@users.noreply.github.com>

libs/common/src/platform/abstractions/sdk/sdk.service.ts

@@ -3,6 +3,7 @@ import { Observable } from "rxjs";
 import { BitwardenClient } from "@bitwarden/sdk-internal";
 
 import { UserId } from "../../../types/guid";
+import { Rc } from "../../misc/reference-counting/rc";
 
 export abstract class SdkService {
   /**
@@ -27,5 +28,5 @@ export abstract class SdkService {
    *
    * @param userId
    */
-  abstract userClient$(userId: UserId): Observable<BitwardenClient | undefined>;
+  abstract userClient$(userId: UserId): Observable<Rc<BitwardenClient> | undefined>;
 }