feat: Reorder OnboardingProgress and OnboardingStep structs and add MVNOFilter type

- Move OnboardingProgress struct definition before OnboardingStep for logical ordering
- Add MVNOFilter struct with status, plan, business_id, limit, offset, and date range filtering fields

apps/carrier-connector/internal/mvno/types.go

@@ -59,14 +59,6 @@ type OnboardingRequest struct {
 	TechnicalContact string   `json:"technical_contact"`
 }
 
-// OnboardingStep represents individual onboarding steps
-type OnboardingStep struct {
-	Name        string    `json:"name"`
-	Status      string    `json:"status"`
-	CompletedAt time.Time `json:"completed_at"`
-	Error       string    `json:"error,omitempty"`
-}
-
 // OnboardingProgress tracks the onboarding progress
 type OnboardingProgress struct {
 	MVNOID      string           `json:"mvno_id"`
@@ -75,3 +67,22 @@ type OnboardingProgress struct {
 	StartedAt   time.Time        `json:"started_at"`
 	CompletedAt time.Time        `json:"completed_at"`
 }
+
+// OnboardingStep represents individual onboarding steps
+type OnboardingStep struct {
+	Name        string    `json:"name"`
+	Status      string    `json:"status"`
+	CompletedAt time.Time `json:"completed_at"`
+	Error       string    `json:"error,omitempty"`
+}
+
+// MVNOFilter defines filtering options for MVNO queries
+type MVNOFilter struct {
+	Status        MVNOStatus `json:"status,omitempty"`
+	Plan          MVNOPlan   `json:"plan,omitempty"`
+	BusinessID    string     `json:"business_id,omitempty"`
+	Limit         int        `json:"limit,omitempty"`
+	Offset        int        `json:"offset,omitempty"`
+	CreatedAfter  *time.Time `json:"created_after,omitempty"`
+	CreatedBefore *time.Time `json:"created_before,omitempty"`
+}