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_1.txt

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