feat: expose health and demo character APIs

apps/api/src/characters/characters.controller.ts

@@ -0,0 +1,12 @@
+import { Controller, Get } from '@nestjs/common';
+import { CharactersService } from './characters.service';
+
+@Controller('characters')
+export class CharactersController {
+  constructor(private readonly charactersService: CharactersService) {}
+
+  @Get('me')
+  getDemoCharacter() {
+    return this.charactersService.getDemoCharacter();
+  }
+}