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_23.txt

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