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_7.txt

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