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/transforms/queries/vlan_intent.gql

@@ -0,0 +1,92 @@
+query VlanIntent($device_name: String!) {
+  # VLANs reachable via VTEP VLAN-VNI mappings (L2/VXLAN VLANs)
+  InfraVTEP(device__name__value: $device_name) {
+    edges {
+      node {
+        source_address {
+          value
+        }
+        udp_port {
+          value
+        }
+        vlan_vni_mappings {
+          edges {
+            node {
+              vlan {
+                node {
+                  vlan_id {
+                    value
+                  }
+                  name {
+                    value
+                  }
+                  status {
+                    value
+                  }
+                  vlan_type {
+                    value
+                  }
+                  trunk_groups {
+                    value
+                  }
+                  stp_enabled {
+                    value
+                  }
+                  vni {
+                    node {
+                      vni {
+                        value
+                      }
+                      vni_type {
+                        value
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  # VLANs reachable via SVI interfaces (MLAG, routing, and other local VLANs)
+  InfraInterfaceVlan(device__name__value: $device_name) {
+    edges {
+      node {
+        vlan {
+          node {
+            vlan_id {
+              value
+            }
+            name {
+              value
+            }
+            status {
+              value
+            }
+            vlan_type {
+              value
+            }
+            trunk_groups {
+              value
+            }
+            stp_enabled {
+              value
+            }
+            vni {
+              node {
+                vni {
+                  value
+                }
+                vni_type {
+                  value
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}