Missing shebang in bin/*.sh files

[EtaoinWu]

Describe the bug
All of the bin/*.sh files are missing shebang, so alpine cannot directly execute them.

To Reproduce
Steps to reproduce the behavior:

docker run -it --rm edasriyan/lottie-to-png lottie_to_png.sh

Expected result

usage: /usr/bin/lottie_to_png.sh [--help] [--output OUTPUT] [--height HEIGHT] [--width WIDTH] [--threads THREADS] [--fps FPS] [-
-quality QUALITY] path                                                                                                          
                                                                                                                                
Lottie animations (.json) and Telegram stickers for Telegram (*.tgs) to animated .png converter                                 
                                                                                                                                
Positional arguments:                                                                                                           
 path              Path to .json or .tgs file to convert                                                                        
                                                                                                                                
Optional arguments:                                                                                                             
 -h, --help        shows this help message and exits                                                                            
 -v, --version     prints version information and exits                                                                         
 --output OUTPUT   Output file path                                                                                             
 --height HEIGHT   Output image height. Default: 512                                                                            
 --width WIDTH     Output image width. Default: 512                                                                             
 --fps FPS         Output frame rate. Default: 60                                                                               
 --threads THREADS Number of threads to use. Default: number of CPUs                                                            
 --quality QUALITY Output quality. Default: 90                                                                                  

Actual result
see below.

Console copy-paste
Please copy-paste command run and program output

[root@machine dir]# docker run -it --rm edasriyan/lottie-to-png lottie_to_png.sh
exec /usr/bin/lottie_to_png.sh: exec format error

Desktop (please complete the following information):

• OS: AlmaLinux 9.4, but this shouldn't matter
• Arch: x86_64

Potential fix
Add #!/bin/sh to every bin/*.sh file.