chore: fix proto script file handling and safety

[mdqst]

• removed unnecessary () around go install … to avoid spawning a useless subshell.
• rewrote the file loop to safely handle .proto files with spaces or special characters:
  for file in $(find …) → find … -print0 | while IFS= read -r -d '' file.
• updated grep "option go_package" to grep -q "option go_package" "$file" for quiet search and proper quoting.
• added cd proto || exit 1 to stop the script if the directory doesn’t exist.
• created the x/ directory before copying files to prevent errors: mkdir -p x.
• narrowed down rm -rf to only remove the target subdirectory (github.com/neutron-org) instead of the whole github.com.

changes make the script safer, more robust, and prevent accidental deletion or errors when handling files with tricky names.

[mmikev]

Resolve conflicts, please

[mmikev]

I don't think it makes sense to create the x folder, it must always be here.

[mmikev]

This command will not remove the github.com directory itself, so it doesn't make sense to narrow the command down to neutron-org