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_36.txt

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