chore: adds appwrite environment variable examples

Author: Seboran

.env.example

@@ -5,4 +5,9 @@
 # Prisma supports the native connection string format for PostgreSQL, MySQL, SQLite, SQL Server, MongoDB (Preview) and CockroachDB (Preview).
 # See the documentation for all the connection string options: https://pris.ly/d/connection-strings
 
-DATABASE_URL="postgres://xx:xxxxxxx@xxxxx/xxxxx"
+DATABASE_URL="postgres://xx:xxxxxxx@xxxxx/xxxxx"
+
+APPWRITE_PROJECT_ID="projectid"
+APPWRITE_DATABASE_ID="databaseid"
+APPWRITE_COLLECTION_ID="collectionid"
+APPWRITE_READ_TOKEN="standard"