add LoadHeaderCount function for group pages

Author: GamerGirlandCo

routers/web/shared/group/header.go

@@ -0,0 +1,24 @@
+package group
+
+import (
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/optional"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/services/context"
+)
+
+func LoadHeaderCount(ctx *context.Context) error {
+	repoCount, err := repo_model.CountRepository(ctx, repo_model.SearchRepoOptions{
+		Actor:              ctx.Doer,
+		Private:            ctx.IsSigned,
+		GroupID:            ctx.RepoGroup.Group.ID,
+		Collaborate:        optional.Some(false),
+		IncludeDescription: setting.UI.SearchRepoDescription,
+	})
+	if err != nil {
+		return err
+	}
+	ctx.Data["RepoCount"] = repoCount
+
+	return nil
+}