[Feature]: corefunc_url_decode

[skyzyx]

What functionality would you like to see?

The inverse of the built-in urlencode() function.

• urldecode function opentofu/opentofu#1234
• https://developer.hashicorp.com/terraform/language/functions/urlencode

corefunc_url_decode "url" {
  url = "https://..."
}
#=> https://...

[pooriaghaedi]

@skyzyx Could you please assign this task to me? I've already written the code.

[skyzyx]

https://1-7-0-beta1.opentofu.pages.dev/docs/language/functions/urldecode/

[skyzyx]

Implemented in #381.