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/slug/frame_9.txt

@@ -0,0 +1,17 @@
+                                      
+              -odp5ttot               
+            5pd5eepgogd-od            
+           5 tee5pddo5godxt           
+          g ee5cod ddteodett          
+         5pgcopgept p-ptctee          
+         e eeegdeocdd epepeee         
+         e xpoeppeootg-t5 eee         
+        e  x5dtoxeed5oode gee         
+        g  gteg 5egexxetexteee        
+         edeeedtededeeeeddeee         
+         g ed5ooe5gppppeeg5oe         
+          oxeeote     t5 d5ee         
+           otoeoo    5cdce5p          
+            d-godep5toccpee           
+             p-d pooect5g             
+