Add project command API

src/frontend/types.ts

@@ -15,6 +15,23 @@ export interface ProjectHistoryStateDto {
   redoChangeSetId: string | null;
 }
 
+export interface ProjectCommandDto {
+  schemaVersion: number;
+  type: string;
+  payload: unknown;
+}
+
+export interface ProjectCommandResultDto {
+  revision: {
+    revisionId: string;
+    changeSetId: string;
+    projectId: string;
+    revisionNumber: number;
+    createdAtIso: string;
+  };
+  history: ProjectHistoryStateDto;
+}
+
 export interface DistributionBoardDto {
   id: string;
   projectId: string;