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_25.txt

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