Cloud migrations: create snapshot files (#89693)

* Cloud migrations: create snapshot and store it on disk

* fix merge conflicts

* implement StartSnapshot for gms client

* pass snapshot directory as argument to snapshot builder

* ensure snapshot folder is set

* make swagger-gen

* remove Test_ExecuteAsyncWorkflow

* pass signed in user to buildSnapshot method / use github.com/grafana/grafana-cloud-migration-snapshot to create snapshot files

* fix FakeServiceImpl.CreateSnapshot

* remove new line

pkg/services/cloudmigration/api/api.go

@@ -376,11 +376,12 @@ func (cma *CloudMigrationAPI) CreateSnapshot(c *contextmodel.ReqContext) respons
 	defer span.End()
 
 	uid := web.Params(c.Req)[":uid"]
+
 	if err := util.ValidateUID(uid); err != nil {
 		return response.ErrOrFallback(http.StatusBadRequest, "invalid session uid", err)
 	}
 
-	ss, err := cma.cloudMigrationService.CreateSnapshot(ctx, uid)
+	ss, err := cma.cloudMigrationService.CreateSnapshot(ctx, c.SignedInUser, uid)
 	if err != nil {
 		return response.ErrOrFallback(http.StatusInternalServerError, "error creating snapshot", err)
 	}

pkg/services/cloudmigration/api/curl_commands.txt

@@ -1,7 +1,7 @@
 [sample token] // NOT A REAL TOKEN
 eyJUb2tlbiI6ImNvbXBsZXRlbHlfZmFrZV90b2tlbl9jZG9peTFhYzdwdXlwZCIsIkluc3RhbmNlIjp7IlN0YWNrSUQiOjEyMzQ1LCJTbHVnIjoic3R1Ymluc3RhbmNlIiwiUmVnaW9uU2x1ZyI6ImZha2UtcmVnaW9uIiwiQ2x1c3RlclNsdWciOiJmYWtlLWNsdXNlciJ9fQ==
 
-[create session}
+[create session]
 curl -X POST -H "Content-Type: application/json" \
   http://admin:admin@localhost:3000/api/cloudmigration/migration \
   -d '{"AuthToken":"eyJUb2tlbiI6ImNvbXBsZXRlbHlfZmFrZV90b2tlbl9jZG9peTFhYzdwdXlwZCIsIkluc3RhbmNlIjp7IlN0YWNrSUQiOjEyMzQ1LCJTbHVnIjoic3R1Ymluc3RhbmNlIiwiUmVnaW9uU2x1ZyI6ImZha2UtcmVnaW9uIiwiQ2x1c3RlclNsdWciOiJmYWtlLWNsdXNlciJ9fQ=="}'