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_19.txt

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