Refactor event and fight repositories to use numeric IDs for groups; update datetime picker input handling; add new generator components for event fights and group phases.

src/components/repo/fight.ts

@@ -31,7 +31,7 @@ export interface CreateFight {
     redTeam: number;
     start: Dayjs;
     spectatePort: number | null;
-    group: string | null;
+    group: number | null;
 }
 
 export interface UpdateFight {
@@ -57,7 +57,6 @@ export class FightRepo {
         return await fetchWithToken(this.token, `/events/${eventId}/fights`, {
             method: "POST",
             body: JSON.stringify({
-                event: eventId,
                 spielmodus: fight.spielmodus,
                 map: fight.map,
                 blueTeam: fight.blueTeam,