Refactor API documentation and update endpoint tags for clarity

- Updated README.md to reflect changes in endpoint categories, renaming "Customers-Admin" to "Admin-Customers" and "Companies-Admin" to "Admin-Companies" for consistency.
- Modified health check endpoint tags from "Health" to "Admin-Health" to align with the new naming convention.
- Adjusted Swagger documentation to replace outdated tags and ensure accurate representation of the API structure.
- Enhanced user and customer handler documentation to reflect the new "Admin-Authorization" and "Admin-Users" tags, improving clarity in the API documentation.

internal/customer/form.go

@@ -18,7 +18,6 @@ type CreateCustomerForm struct {
 	Mobile    *string `json:"mobile,omitempty" valid:"optional,length(10|20)"`
 
 	// Company customer fields
-	CompanyName        *string `json:"company_name,omitempty" valid:"optional,length(2|200)"`
 	RegistrationNumber *string `json:"registration_number,omitempty" valid:"optional,length(5|50)"`
 	TaxID              *string `json:"tax_id,omitempty" valid:"optional,length(5|50)"`
 	Industry           *string `json:"industry,omitempty" valid:"optional,length(2|100)"`