Implement file lock for git (#1838)

Adds a "file lock" command that can be used to mark files as locked by a specific user. This command is implemented for git using a store to keep the locks.

Additionally, the Git LFS locking API is implemented.

To display locks, the scm-manager/scm-file-lock-plugin can be used.

Co-authored-by: Eduard Heimbuch <eduard.heimbuch@cloudogu.com>

scm-ui/ui-components/src/index.ts

@@ -44,6 +44,7 @@ export { validation, repositories };
 
 export { default as DateFromNow } from "./DateFromNow";
 export { default as DateShort } from "./DateShort";
+export { default as useDateFormatter } from "./useDateFormatter";
 export { default as Duration } from "./Duration";
 export { default as ErrorNotification } from "./ErrorNotification";
 export { default as ErrorPage } from "./ErrorPage";