optimized getting reading directories, started work on dir tree in file view

widgets/repo_dir_tree.py

@@ -0,0 +1,22 @@
+from textual.widgets import Tree, DirectoryTree
+from textual.widgets.directory_tree import DirEntry
+from textual import work
+
+import requests
+
+
+class RepoDirectoryTree(DirectoryTree):
+    ICON_NODE_EXPANDED = "\uf07c "
+    ICON_NODE = "\ue5ff "
+    ICON_FILE = "\uf15b "
+    
+    def __init__(self, repo_owner: str, repo_name: str, path: str, name: str | None = None, id: str | None = None, classes: str | None = None, disabled: bool = False):
+        super().__init__(path=path, name=name, id=id, classes=classes, disabled=disabled)
+        
+        self.repo_owner = repo_owner
+        self.repo_name = repo_name
+    
+    def _directory_content(self, location: Path, worker: Worker) -> Iterator[Path]:
+        contents = requests.get(
+            self.app.GITEA_HOST + f"api/v1/repos/{self.repo_owner}/{self.repo_name}/contents/{location}"
+        ).json()