refactor: move transforms/ into infrahub/ and update all paths (#20)

Move transforms/{queries,templates,tests} under infrahub/transforms/ so all
Infrahub-managed content lives under the dedicated infrahub/ directory,
consistent with schemas/, objects/, and menus/.

Updated paths:
- .infrahub.yml: file_path and template_path entries now prefixed with
  infrahub/transforms/
- infrahub/transforms/tests/*/test.yml: directory references updated from
  transforms/tests/* to infrahub/transforms/tests/*

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.infrahub.yml

@@ -19,22 +19,22 @@ objects:
 
 queries:
   - name: vlan_intent
-    file_path: transforms/queries/vlan_intent.gql
+    file_path: infrahub/transforms/queries/vlan_intent.gql
   - name: interface_intent
-    file_path: transforms/queries/interface_intent.gql
+    file_path: infrahub/transforms/queries/interface_intent.gql
   - name: vxlan_intent
-    file_path: transforms/queries/vxlan_intent.gql
+    file_path: infrahub/transforms/queries/vxlan_intent.gql
 
 jinja2_transforms:
   - name: vlan_yang_transform
     description: "Generate VLAN configuration payload from Infrahub intent"
     query: vlan_intent
-    template_path: transforms/templates/vlan_yang.j2
+    template_path: infrahub/transforms/templates/vlan_yang.j2
   - name: interface_yang_transform
     description: "Generate interface configuration payload from Infrahub intent"
     query: interface_intent
-    template_path: transforms/templates/interface_yang.j2
+    template_path: infrahub/transforms/templates/interface_yang.j2
   - name: vxlan_yang_transform
     description: "Generate VXLAN/VTEP configuration payload from Infrahub intent"
     query: vxlan_intent
-    template_path: transforms/templates/vxlan_yang.j2
+    template_path: infrahub/transforms/templates/vxlan_yang.j2