Add cancel request signature mutation

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

pkg/server/api/console/v1/schema.graphql

@@ -1397,6 +1397,9 @@ type Mutation {
   sendSigningNotifications(
     input: SendSigningNotificationsInput!
   ): SendSigningNotificationsPayload!
+  cancelSignatureRequest(
+    input: CancelSignatureRequestInput!
+  ): CancelSignatureRequestPayload!
   exportDocumentVersionPDF(
     input: ExportDocumentVersionPDFInput!
   ): ExportDocumentVersionPDFPayload!
@@ -2119,6 +2122,10 @@ input UpdateDocumentVersionInput {
   content: String!
 }
 
+input CancelSignatureRequestInput {
+  documentVersionSignatureId: ID!
+}
+
 type UpdateDocumentVersionPayload {
   documentVersion: DocumentVersion!
 }
@@ -2131,6 +2138,10 @@ type SendSigningNotificationsPayload {
   success: Boolean!
 }
 
+type CancelSignatureRequestPayload {
+  deletedDocumentVersionSignatureId: ID!
+}
+
 type UploadTaskEvidencePayload {
   evidenceEdge: EvidenceEdge!
 }