feat(base): page renderer dispatches to base view when page.isBase

- Add isBase to page repo baseFields so it is always selected
- Add isBase to sidebar pages query select list
- Add isBase to client IPage type
- In PageContent, render <BaseTable pageId={page.id} /> when page.isBase
  is true instead of the TipTap editor path

apps/client/src/features/page/types/page.types.ts

@@ -12,6 +12,7 @@ export interface IPage {
   spaceId: string;
   workspaceId: string;
   isLocked: boolean;
+  isBase: boolean;
   lastUpdatedById: string;
   createdAt: Date;
   updatedAt: Date;