feat: [STO-9671]: Enhance Exemption model and API for Global Exemptions (#166)

* feat: [STO-9671]: Enhance Exemption model and API for Global Exemptions

- Added OrgName and ProjectName fields to the Exemption struct.
- Introduced IsOccurrenceLevelExemption field in FrontendExemption struct.
- Created GlobalExemptionsRequestBody model for handling organization:project pairs.
- Updated FrontendGlobalExemptions API to accept a request body.
- Removed MatchesProject parameter from the tool and adjusted the request handling accordingly.

Author: tkAcharya007

client/sto/generated/sto.gen.go

@@ -291,7 +291,7 @@ func StoGlobalExemptionsTool(config *config.Config, client *generated.ClientWith
 			mcp.WithString("projectId", mcp.Required(), mcp.Description("Harness Project ID")),
 			mcp.WithNumber("page", mcp.Description("Page number to fetch (starting from 0)"), mcp.Min(0), mcp.DefaultNumber(0)),
 			mcp.WithNumber("pageSize", mcp.Description("Number of results per page"), mcp.DefaultNumber(5)),
-			mcp.WithString("matchesProject", mcp.Description("Comma-separated list of organization:project pairs to filter exemptions by project scope (e.g., \"default:STO,default:CCM\").")),
+
 			mcp.WithString("status", mcp.Description("Required. Exemption status: Pending, Approved, Rejected, Expired. You must provide exactly one status.")),
 			mcp.WithString("search", mcp.Description(`Free-text search that matches both issue titles and exemption titles.
 		
@@ -331,17 +331,18 @@ func StoGlobalExemptionsTool(config *config.Config, client *generated.ClientWith
 			} else {
 				params.PageSize = &size
 			}
-			if v, _ := OptionalParam[string](request, "matchesProject"); v != "" {
-				params.MatchesProject = &v
-			}
+
 			if v, _ := OptionalParam[string](request, "status"); v != "" {
 				params.Status = generated.FrontendGlobalExemptionsParamsStatus(v)
 			}
 			if v, _ := OptionalParam[string](request, "search"); v != "" {
 				params.Search = &v
 			}
 
-			resp, err := client.FrontendGlobalExemptionsWithResponse(ctx, params)
+			// Create request body for the new POST API
+			body := generated.GlobalExemptionsRequestBody{}
+
+			resp, err := client.FrontendGlobalExemptionsWithResponse(ctx, params, body)
 			if err != nil {
 				return mcp.NewToolResultError(err.Error()), nil
 			}
@@ -373,7 +374,7 @@ func StoGlobalExemptionsTool(config *config.Config, client *generated.ClientWith
 				}
 				// PrincipalService: GetUserInfo(ctx, scope, userID, page, size)
 				userInfo, err := principalClient.GetUserInfo(ctx, scope, userID, 0, 1)
-				if err == nil && userInfo != nil && &userInfo.Data != nil && &userInfo.Data.User != nil {
+				if err == nil && userInfo != nil {
 					if userInfo.Data.User.Name != "" {
 						name = userInfo.Data.User.Name
 					} else if userInfo.Data.User.Email != "" {