🔧 chore: create @manacore/shared-drizzle-config and migrate 16 configs

- Create factory function with dbName, schemaPath, outDir, schemaFilter options
- Migrate 12 app backends: calendar, chat, clock, contacts, nutriphi, picture,
  planta, presi, questions, skilltree, storage, todo
- Migrate 4 services: mana-core-auth, telegram-zitare-bot, telegram-todo-bot,
  telegram-nutriphi-bot
- Update consolidation docs with completed Drizzle config task

Savings: ~160 LOC (16 configs × ~10 LOC each)

apps/skilltree/apps/backend/drizzle.config.ts

@@ -1,11 +1,7 @@
 import 'dotenv/config';
-import { defineConfig } from 'drizzle-kit';
+import { createDrizzleConfig } from '@manacore/shared-drizzle-config';
 
-export default defineConfig({
-	schema: './src/db/schema/index.ts',
-	out: './drizzle',
-	dialect: 'postgresql',
-	dbCredentials: {
-		url: process.env.DATABASE_URL!,
-	},
+export default createDrizzleConfig({
+	dbName: 'skilltree',
+	outDir: './drizzle',
 });