Possible fix for proxy/reverse proxy

[snipe]

This should override Symfony's parsing of URLs to prevent folks from having to add the APP_FORCE_TLS=true to their .env when they are running behind a proxy/reverse proxy. I'm still not 100% sure why this change was needed when it wasn't in previous versions, but I think this will fix the issue.

This will still let you force override (for whatever possible reason) if your URL schema is not https (which you definitely shouldn't do, in general), but it basically changes things so that if you state your APP_URL to be https://, we WILL enforce secure urls.

Many thanks to @uberbrady and all of the amazing folks in the PHP Portugal Telegram group for helping us rubberduck this.

[what-the-diff]

PR Summary

• Enabling Support for URL Facade
  A code statement has been added to include URL Facade which acts as a helper tool to generate URLs.

• Enforcing HTTPS Scheme
  Within the 'boot' function, we have instituted a check. The purpose is to ensure that HTTPS, a more secure version of the HTTP protocol, is enforced whenever the application URL starts with 'https://' or if a specific setting (APP_FORCE_TLS) is enabled.

• Preventing URL Forgery via Host Headers
  Again, in the 'boot' function, a precautionary measure was added to prevent the potential manipulation of URL's through the Host headers. However, this restriction can be overridden if another setting (APP_ALLOW_INSECURE_HOSTS) is activated. This is to ensure a secure communication, by maintaining the integrity of data across the webpages.