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_24.txt

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