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_15.txt

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