feat(View): add stub implementation of draw_screen

The View component in MVVM handles UI layout and construction. Though it
is currently in the model directory, the `View` enum will be our View
component. Future commits will move this to it's own directory.

Add a stub implementation of a method that can draw the current
screen.

Signed-off-by: Ivin Joel Abraham <ivinjoelabraham@proton.me>

Author: ivinjabraham

src/model/screens/mod.rs

@@ -12,3 +12,16 @@ pub enum View {
     PatchsetDetails,
     EditConfig,
 }
+
+impl View {
+    #[allow(dead_code)]
+    pub fn draw_screen(&self) {
+        match self {
+            View::MailingListSelection => todo!(),
+            View::BookmarkedPatchsets => todo!(),
+            View::LatestPatchsets => todo!(),
+            View::PatchsetDetails => todo!(),
+            View::EditConfig => todo!(),
+        }
+    }
+}