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_36.txt

@@ -0,0 +1,17 @@
+                                      
+              eecdccccdcoe            
+          edccecodocecdcccccce        
+        oeceoccoccee eccxccxocxo      
+      exccceeee            ccxecx     
+     ooedecxeeeoo             eeoc    
+     o ooe  ce cxoo            ceec   
+    x d e      e cee            xexo  
+    xxex      ee eoo            ex x  
+    xccx     oo occcocceccccce  xexx  
+     ecxe  oxeeoxo  exeeeeeeexx eoce  
+     c cxe cecoe     ccceeeeec xoco   
+      cocedo                 ooxco    
+        eoxxcxo           occcooe     
+          coecccdedxecxdcocodcc       
+            eccoxeooeooccccc          
+