added for azure devops too

Author: karansaraswat19

scm/driver/azure/pr.go

@@ -107,6 +107,7 @@ type pr struct {
 	SourceRefName         string      `json:"sourceRefName"`
 	TargetRefName         string      `json:"targetRefName"`
 	MergeStatus           string      `json:"mergeStatus"`
+	IsDraft               bool        `json:"isDraft"`
 	MergeID               string      `json:"mergeId"`
 	LastMergeSourceCommit struct {
 		CommitID string `json:"commitId"`
@@ -168,6 +169,7 @@ func convertPullRequest(from *pr) *scm.PullRequest {
 		Source: scm.TrimRef(from.SourceRefName),
 		Target: scm.TrimRef(from.TargetRefName),
 		Link:   from.URL,
+		Draft:  from.IsDraft,
 		Closed: from.ClosedDate.Valid,
 		Merged: from.Status == "completed",
 		Ref:    fmt.Sprintf("refs/pull/%d/merge", from.PullRequestID),

scm/driver/azure/testdata/pr.json

@@ -30,6 +30,7 @@
     "sourceRefName": "refs/heads/pr_branch",
     "targetRefName": "refs/heads/main",
     "mergeStatus": "queued",
+    "isDraft": false,
     "mergeId": "36c88bf7-3d14-437f-82aa-e38cce733261",
     "lastMergeSourceCommit": {
         "commitId": "01768d964c03e97260af0bd8cd9e5cd1f9ac6356",

scm/driver/azure/testdata/pr.json.golden

@@ -10,6 +10,7 @@
   "Fork": "",
   "Link": "https://dev.azure.com/tphoney/d350c9c0-7749-4ff8-a78f-f9c1f0e56729/_apis/git/repositories/fde2d21f-13b9-4864-a995-83329045289a/pullRequests/19",
   "Diff": "",
+  "Draft": false,
   "Closed": true,
   "Merged": true,
   "Base": {

scm/driver/gitlab/testdata/webhooks/pull_request_review_ready.json.golden

@@ -23,6 +23,7 @@
         "Target": "main",
         "Fork": "Meet Rathod/meet",
         "Link": "https://gitlab.com/rathod.meetsatish/meet/-/merge_requests/3",
+        "Draft": true,
         "Closed": false,
         "Merged": false,
         "Author": {