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_18.txt

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