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/shapes/frame_21.txt

@@ -0,0 +1,17 @@
+                                      
+             ◆◆▲●□●●□●□▲◆◆            
+          ▲□□◆◆◆◆□◇●◇□●◆◆▲□□◆         
+        ●□○◆□□○■◆     ◆○◇□□◆◆□▲       
+      ▲□◇●■■             ◆▲●□▲●□▲     
+     △▲△□◆             ▲◇△◆○ ○○◆○▲    
+    △■△◇             ▲□□◆△△    ○○○▲   
+    ◇■◇◆           ◆ △◆▲△■     ○●○■   
+     ◆○            ○● ■◇▲       ◇ ◇   
+    ◇ ◇  ▲□●●●●●□□□  ○◇▲■◇▲    ●△ ◇   
+    ◇ ◇○ ◇◆      ◆▲◇   ○■◆□◇▲  △■△△   
+     ● ■△ ◆◆■■■  ■◆     ■□◆▲● △◆ ▲    
+     ■□ △●◆                 ◆□■ △     
+       □◆  ○▲◆          ◆△●□■ ▲◆      
+         □●◆ □■□□△◇◇●△●□■■  ▲◆        
+            □□□●□◆◆◆◆▲◆●□□◆           
+