Refactor Infrahub config and rename schema folder

Move schema files into a dedicated 'schemas' directory and update
.infrahub.yml to reference them along with adding sections for schemas,
generators, and queries.

infrahub/.infrahub.yml

@@ -1,8 +1,12 @@
 # yaml-language-server: $schema=https://schema.infrahub.app/python-sdk/repository-config/latest.json
 ---
 # Infrahub Repository Configuration
-# This file defines generators and queries for datacenter automation
 
+# Define where schemas are located
+schemas:
+  - schemas/*.yml
+
+# Generator definitions
 generator_definitions:
   - name: datacenter_generator
     file_path: "generators/datacenter_generator.py"
@@ -13,6 +17,7 @@ generator_definitions:
     parameters:
       datacenter_id: "id"
 
+# GraphQL queries
 queries:
   - name: datacenter_query
     file_path: "generators/datacenter_query.gql"