feat: implement remote fetching of the model.conf

[francoisauclair911]

• Require Guzzle
• Added to config key for url path and cache time
• Added logic to fetch the .conf file and use it as a model.

[hsluoyz]

Fix: https://github.com/php-casbin/laravel-authz/issues/15

[hsluoyz]

@techoner

[francoisauclair911]

Fighting my IDE at every step but I'll finally merge the right thing

[francoisauclair911]

@techoner hopefully this works now ? Not sure how clean it looks, I can delete this and recreate new merge request if it helps

Cheers

[hsluoyz]

@francoisauclair911 plz squash your commits into one single commit.

And also fix the checks:

[leeqvip]

@techoner hopefully this works now ? Not sure how clean it looks, I can delete this and recreate new merge request if it helps

Cheers

@francoisauclair911 .gitconfig should ignore newlines and file mods

[core]
autocrlf = false
filemode = false
safecrlf = true