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/codex/frame_10.txt

@@ -0,0 +1,17 @@
+                                      
+              eccccecce               
+             ccecccexoeco             
+            eeoxxoxxoxceoo            
+           xeeoexdeoeocceeo           
+           o dxxcxe cooeoxo           
+          xe cxcxooe   eecx           
+          e  xcccxxxxc   xoo          
+          c  xxecocxxoeeoexx          
+          c  xe eexdxxcecdxx          
+          x  oxeoxeoeceeexce          
+           o cxxxxxcc eocexe          
+           eecoeocc exccooo           
+            xc xxxxcodooxoe           
+             deccoxcde ooc            
+              co eceeodc              
+