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/hash/frame_16.txt

@@ -0,0 +1,17 @@
+                                      
+                -*#█**#.-             
+               A-..*..*.**            
+              .AA█*A**.. █*           
+             AAA **-*.*..**.          
+             ..*-A*█*..*A.-*          
+            ...*.█ .**  . ...         
+            **. A-#....A*█# .         
+            .A* .-..A...█* -.         
+            **...#.A-..█*#  A         
+            *█--#****..-. #-.         
+            ...#██A**.*█*...-         
+             ..* .-  -AA#  A          
+             *.*  .  A#A-#.           
+              *..█-*.AA#-.            
+               █A.-*A--**             
+