style(core): align struct tags and fields

Standardize alignment of struct tags in models and field assignments in
services for better readability. Additionally, include the Binding model
in the test database auto-migration.

internal/dto/binding.go

@@ -10,4 +10,3 @@ type BindingDTO struct {
 	SelectorValue string `json:"selector_value"`
 	Status        string `json:"status"`
 }
-