add multi browser mode to arragate data from all browsers by tabs list, tabs count, group list, group count and windows list

remove (unnamed) into the group names just leave it a empty string, remove Focused on windows how should the browser know what windows are focused

browser_cli/models.py

@@ -32,6 +32,7 @@ class Tab:
     title: str
     url: str
     group_id: int | None = None
+    browser: str | None = None
     _browser: BrowserCLI | None = field(default=None, repr=False, compare=False, init=False)
 
     def _b(self) -> BrowserCLI:
@@ -103,6 +104,7 @@ class Group:
     color: str
     collapsed: bool
     tab_count: int
+    browser: str | None = None
     _browser: BrowserCLI | None = field(default=None, repr=False, compare=False, init=False)
 
     def _b(self) -> BrowserCLI: