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_27.txt

@@ -0,0 +1,17 @@
+                                      
+                dcccco                
+               xddoxoe                
+              dce cxocx               
+              xxxexxdxx               
+              x  exeocd               
+              xeoecexxxe              
+              d cxxecxx               
+             x  exxxdcxx              
+             xo o xcxxxx              
+             cd ocexecxx              
+              xo eecccoc              
+              xxccxxeox               
+              xddcdooxe               
+               eeexedoo               
+               cec eeo                
+