[MODERATION] user blocking

- Add the ability to block a user via their profile page.
- This will unstar their repositories and visa versa.
- Blocked users cannot create issues or pull requests on your the doer's repositories (mind that this is not the case for organizations).
- Blocked users cannot comment on the doer's opened issues or pull requests.
- Blocked users cannot add reactions to doer's comments.
- Blocked users cannot cause a notification trough mentioning the doer.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/540
(cherry picked from commit 687d852480)
(cherry picked from commit 0c32a4fde5)
(cherry picked from commit 1791130e3c)
(cherry picked from commit 37858b7e8f)
(cherry picked from commit a3e2bfd7e9)
(cherry picked from commit 7009b9fe87)

Conflicts: https://codeberg.org/forgejo/forgejo/pulls/1014
	routers/web/user/profile.go
	templates/user/profile.tmpl

routers/web/user/profile.go

@@ -23,6 +23,7 @@ import (
 	"code.gitea.io/gitea/routers/web/feed"
 	"code.gitea.io/gitea/routers/web/org"
 	shared_user "code.gitea.io/gitea/routers/web/shared/user"
+	user_service "code.gitea.io/gitea/services/user"
 )
 
 // OwnerProfile render profile page for a user or a organization (aka, repo owner)
@@ -279,11 +280,17 @@ func prepareUserProfileTabData(ctx *context.Context, showPrivate bool, profileGi
 // Action response for follow/unfollow user request
 func Action(ctx *context.Context) {
 	var err error
+	var redirectViaJSON bool
 	switch ctx.FormString("action") {
 	case "follow":
-		err = user_model.FollowUser(ctx.Doer.ID, ctx.ContextUser.ID)
+		err = user_model.FollowUser(ctx, ctx.Doer.ID, ctx.ContextUser.ID)
 	case "unfollow":
-		err = user_model.UnfollowUser(ctx.Doer.ID, ctx.ContextUser.ID)
+		err = user_model.UnfollowUser(ctx, ctx.Doer.ID, ctx.ContextUser.ID)
+	case "block":
+		err = user_service.BlockUser(ctx, ctx.Doer.ID, ctx.ContextUser.ID)
+		redirectViaJSON = true
+	case "unblock":
+		err = user_model.UnblockUser(ctx, ctx.Doer.ID, ctx.ContextUser.ID)
 	}
 
 	if err != nil {
@@ -291,5 +298,13 @@ func Action(ctx *context.Context) {
 		ctx.JSONError(fmt.Sprintf("Action %q failed", ctx.FormString("action")))
 		return
 	}
+
+	if redirectViaJSON {
+		ctx.JSON(http.StatusOK, map[string]interface{}{
+			"redirect": ctx.ContextUser.HomeLink(),
+		})
+		return
+	}
+
 	ctx.JSONOK()
 }