Change animation frames (#3627)

## Description
- Changes animation frames to be smaller
- Cleans up file names and popup logic

## tests
- Passes local CI

codex-rs/tui/frames/dots/frame_7.txt

@@ -0,0 +1,17 @@
+                                      
+             ○◉·◉●●○○●●○              
+          ●●·●○·●●●○○○◉ ·●●           
+         ● ●···●·  ·○·· ●◉○●●         
+        ○○····◉●       ○·○●·◉●        
+       ·●·●··○·◉○●       ◉ ●··○       
+      · ◉··  ·●○◉·○       ●◉···       
+       ·○ ·  ○○·○·○·       ●●○··      
+      ○ ◉··   ○●◉·●··      ● ···      
+       ◉ ·● ● ○◉·○◉··◉◉○··○◉●○··      
+      ·●●··○◉··◉●·◉○··○○●○●◉○·○·      
+       ○ ○○◉●·●○◉  ●●●●●●  ○◉··       
+       ●○ ◉○◉○·         ● ◉◉◉◉●       
+        ●◉●●○○○○      ●○·●●◉●●        
+          ○○●○·●○◉·○○○●●·●●◉          
+             ·● ·◉·○○●○◉●●            
+