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/schemas/01_organization.yml

@@ -0,0 +1,111 @@
+# yaml-language-server: $schema=https://schema.infrahub.app/infrahub/schema/latest.json
+---
+version: "1.0"
+
+nodes:
+  - name: Organization
+    namespace: Organization
+    label: "Organization"
+    icon: "mdi:domain"
+    include_in_menu: true
+    human_friendly_id: ["name__value"]
+    display_label: "name__value"
+    order_by:
+      - name__value
+    attributes:
+      - name: name
+        kind: Text
+        unique: true
+        optional: false
+        description: "Organization name"
+      - name: description
+        kind: Text
+        optional: true
+        description: "Organization description"
+      - name: asn_base
+        kind: Number
+        optional: false
+        default_value: 65000
+        description: "Base ASN for BGP allocation (e.g., 65000)"
+    relationships:
+      - name: sites
+        peer: LocationSite
+        optional: true
+        cardinality: many
+        kind: Generic
+        description: "Sites belonging to this organization"
+      - name: ip_namespaces
+        peer: IpamNamespace
+        optional: true
+        cardinality: many
+        kind: Generic
+        description: "IP namespaces managed by this organization"
+
+  - name: Site
+    namespace: Location
+    label: "Site"
+    icon: "mdi:office-building"
+    include_in_menu: true
+    menu_placement: "OrganizationOrganization"
+    human_friendly_id: ["name__value"]
+    display_label: "name__value"
+    order_by:
+      - name__value
+    attributes:
+      - name: name
+        kind: Text
+        unique: true
+        optional: false
+        description: "Site name (e.g., Paris-DC)"
+      - name: description
+        kind: Text
+        optional: true
+        description: "Site description"
+      - name: location
+        kind: Text
+        optional: true
+        description: "Physical location (e.g., Paris, France)"
+      - name: facility_id
+        kind: Text
+        optional: true
+        description: "Facility identifier"
+      - name: status
+        kind: Dropdown
+        optional: false
+        default_value: "active"
+        choices:
+          - name: active
+            label: Active
+            description: Site is operational
+            color: "#7fbf7f"
+          - name: planned
+            label: Planned
+            description: Site is being planned
+            color: "#ffd966"
+          - name: maintenance
+            label: Maintenance
+            description: Site under maintenance
+            color: "#ff9999"
+          - name: decommissioned
+            label: Decommissioned
+            description: Site decommissioned
+            color: "#cccccc"
+    relationships:
+      - name: organization
+        peer: OrganizationOrganization
+        optional: false
+        cardinality: one
+        kind: Attribute
+        description: "Parent organization"
+      - name: datacenters
+        peer: InfraDatacenter
+        optional: true
+        cardinality: many
+        kind: Generic
+        description: "Datacenters at this site"
+      - name: parent_prefix
+        peer: IpamIPPrefix
+        optional: true
+        cardinality: one
+        kind: Attribute
+        description: "Parent IP prefix for this site"