Assign ownership to many libs files (#6928)

Assign ownership to many of the remaining libs/common files.

Criteria for ownership:
* Files used by a single team, is now owned by that team.
* Files related to a domain owned by a team is now owned by that team.
* Where ownership is unclear the "lowest level" service takes ownership.

libs/common/src/abstractions/anonymousHub.service.ts

@@ -1,4 +0,0 @@
-export abstract class AnonymousHubService {
-  createHubConnection: (token: string) => void;
-  stopHubConnection: () => void;
-}

libs/common/src/abstractions/totp.service.ts

@@ -1,4 +0,0 @@
-export abstract class TotpService {
-  getCode: (key: string) => Promise<string>;
-  getTimeInterval: (key: string) => number;
-}