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/vbars/frame_26.txt

@@ -0,0 +1,17 @@
+                                      
+              ▎▌▉▉▉█▉▊                
+             ▋▉▏▌▋▍▏▉▌▏▊              
+            ▋▉██▏▌▍▏▍██▍▊             
+           ▌▉█▊▏▏▏▎▏▏▎▉▋▍             
+           ▏▎▊▍▏▋▏█▉▍▋▌▏▍▌            
+           ▍ █▏▋▋▋█▉▎▍█▍▍▋            
+          ▏   ▉█▌▏▏▋▏▏▌▌█▉            
+          ▋▊  ▍▏▏▏▍▍▌▏▏▋▏▏            
+          ▏  ▋▍▉▌▉▏▉▌▌▋▍▏▏            
+            ▋▎▏▋▊▏▎▎▊▉▍▍▉▏            
+           ▏▎█▋▏▉█▍▊▋▎▉▍▏▏            
+           ▍▎▏▏▋▍   ▋▋█▏▏▎            
+            ▉  ▉▏▍ ▍▎▋▏▋▊             
+             ▏█▉▍▍█▉▎▉▉▌              
+              ▍▋▋▍▉▏▎▍▉               
+