Feature/branch details (#1876)

Enrich branch overview with more details like last committer and ahead/behind commits. Since calculating this information is pretty intense, we request it in chunks to prevent very long loading times. Also we cache the results in frontend and backend.

Co-authored-by: René Pfeuffer <rene.pfeuffer@cloudogu.com>

scm-ui/ui-types/src/Branches.ts

@@ -22,7 +22,8 @@
  * SOFTWARE.
  */
 
-import { Embedded, HalRepresentationWithEmbedded, Links } from "./hal";
+import { Person } from ".";
+import { Embedded, HalRepresentation, HalRepresentationWithEmbedded, Links } from "./hal";
 
 type EmbeddedBranches = {
   branches: Branch[];
@@ -35,10 +36,23 @@ export type Branch = {
   revision: string;
   defaultBranch?: boolean;
   lastCommitDate?: string;
+  lastCommitter?: Person;
   stale?: boolean;
   _links: Links;
 };
 
+export type BranchDetails = HalRepresentation & {
+  branchName: string;
+  changesetsAhead?: number;
+  changesetsBehind?: number;
+};
+
+type EmbeddedBranchDetails = {
+  branchDetails: BranchDetails[];
+} & Embedded;
+
+export type BranchDetailsCollection = HalRepresentationWithEmbedded<EmbeddedBranchDetails>;
+
 export type BranchCreation = {
   name: string;
   parent: string;