feat: allow to filter events by local-only

In addition to internal (self + federated) and global (global external search engine), introduce the
self possibility

Closes #1322

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

src/types/enums.ts

@@ -293,6 +293,7 @@ export enum InstanceFollowStatus {
 }
 
 export enum SearchTargets {
+  SELF = "SELF",
   INTERNAL = "INTERNAL",
   GLOBAL = "GLOBAL",
 }