Ensure dependencies are loaded

When loading this package emacs would complain of `Symbol’s function definition is void: string-trim`

The reasons being that string-trim from subr-x was not properly being loaded. 

The error goes away with this commit.

If there are any dependencies that should be `eval-when-compile` for performance or other reasons feel free to let me know.

Notes:

https://github.com/immerrr/lua-mode
https://github.com/Ruin0x11/janet-mode
https://github.com/ALSchwalm/janet-mode
https://github.com/fabnicol/metal-mercury-mode

mint-mode.el

@@ -38,10 +38,9 @@
 ;; For more info on mint, visit: https://mint-lang.com
 
 ;;; Code:
-(eval-when-compile
-  (require 'js)
-  (require 'seq)
-  (require 'subr-x))
+(require 'js)
+(require 'seq)
+(require 'subr-x)
 
 ;; Utils
 (defun mint-get-tokens (filename)