Update Tender Approval Status to Include Submitted State and Revise API Documentation

- Changed the approval status from "approved" to "submitted" in various locations, including entity definitions, forms, and service methods, to accurately reflect the tender approval process.
- Updated API documentation in Swagger JSON, YAML, and Go files to describe the new status options ("submitted" and "rejected") and their corresponding descriptions.
- Enhanced the tender approval statistics structures to include a count for submitted tenders, improving the overall data model for tender management.
- These changes ensure clarity in the tender approval workflow and enhance the usability of the API for clients interacting with tender approvals.

internal/tender_approval/entity.go

@@ -9,8 +9,8 @@ import (
 type ApprovalStatus string
 
 const (
-	ApprovalStatusApproved ApprovalStatus = "approved" // Company approved the tender
-	ApprovalStatusRejected ApprovalStatus = "rejected" // Company rejected the tender
+	ApprovalStatusSubmitted ApprovalStatus = "submitted" // Company submitted the tender
+	ApprovalStatusRejected  ApprovalStatus = "rejected"  // Company rejected the tender
 )
 
 // SubmissionMode represents the submission mode of a tender by a company
@@ -121,9 +121,9 @@ func (ta *TenderApproval) GetID() string {
 	return ta.ID.Hex()
 }
 
-// IsApproved returns true if the tender was approved
-func (ta *TenderApproval) IsApproved() bool {
-	return ta.Status == ApprovalStatusApproved
+// IsSubmitted returns true if the tender was submitted
+func (ta *TenderApproval) IsSubmitted() bool {
+	return ta.Status == ApprovalStatusSubmitted
 }
 
 // IsRejected returns true if the tender was rejected
@@ -133,12 +133,12 @@ func (ta *TenderApproval) IsRejected() bool {
 
 // HasDecision returns true if a decision has been made
 func (ta *TenderApproval) HasDecision() bool {
-	return ta.Status == ApprovalStatusApproved || ta.Status == ApprovalStatusRejected
+	return ta.Status == ApprovalStatusSubmitted || ta.Status == ApprovalStatusRejected
 }
 
 // Approve approves the tender with optional notes
-func (ta *TenderApproval) Approve() {
-	ta.Status = ApprovalStatusApproved
+func (ta *TenderApproval) Submit() {
+	ta.Status = ApprovalStatusSubmitted
 	ta.CreatedAt = time.Now().Unix()
 }