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_30.txt

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