Add "Reviewed by you" filter for pull requests (#22927)

This includes pull requests that you approved, requested changes or
commented on. Currently such pull requests are not visible in any of the
filters on /pulls, while they may need further action like merging, or
prodding the author or reviewers.

Especially when working with a large team on a repository it's helpful
to get a full overview of pull requests that may need your attention,
without having to sift through the complete list.

routers/api/v1/repo/issue.go

@@ -92,6 +92,10 @@ func SearchIssues(ctx *context.APIContext) {
 	//   in: query
 	//   description: filter pulls requesting your review, default is false
 	//   type: boolean
+	// - name: reviewed
+	//   in: query
+	//   description: filter pulls reviewed by you, default is false
+	//   type: boolean
 	// - name: owner
 	//   in: query
 	//   description: filter by owner
@@ -266,6 +270,9 @@ func SearchIssues(ctx *context.APIContext) {
 		if ctx.FormBool("review_requested") {
 			issuesOpt.ReviewRequestedID = ctxUserID
 		}
+		if ctx.FormBool("reviewed") {
+			issuesOpt.ReviewedID = ctxUserID
+		}
 
 		if issues, err = issues_model.Issues(ctx, issuesOpt); err != nil {
 			ctx.Error(http.StatusInternalServerError, "Issues", err)