Update CMS Entity and Forms to Include New Fields

- Added new fields to the CMS entity: CompanyName, Country, and Language, enhancing the data structure for better content management.
- Updated the CMSForm to include validation and examples for the new fields, ensuring proper input handling.
- Modified the copyFormToEntity method in the CMS service to map the new fields from the form to the entity, maintaining data integrity.
- Enhanced Swagger documentation to reflect the changes in the CMS API, providing clear examples for the new fields.

cmd/web/docs/swagger.json

@@ -7736,9 +7736,17 @@
                 "chart": {
                     "$ref": "#/definitions/cms.chartSectionForm"
                 },
+                "company_name": {
+                    "type": "string",
+                    "example": "Opplens"
+                },
                 "contact": {
                     "$ref": "#/definitions/cms.contactSectionForm"
                 },
+                "country": {
+                    "type": "string",
+                    "example": "SWE"
+                },
                 "features": {
                     "$ref": "#/definitions/cms.cardSectionForm"
                 },
@@ -7751,6 +7759,10 @@
                 "key": {
                     "type": "string",
                     "example": "SW-001"
+                },
+                "language": {
+                    "type": "string",
+                    "example": "en"
                 }
             }
         },