Improved helper functions

[caendesilva]

Adds helper function documentation and adds a few new global helper functions:

• Add a global asset() helper function
• Add a global route() helper function
• Add a global url() helper function

Design notes:

I debated weather these functions should be global or under the Hyde function namespace. I think making them global is the best. For the majority of users, this will be the most convenient, and for a small subset of users where there are conflicts (such as including Hyde in a Laravel application (which is not "officially" supported)), we can add a constant to disable these functions in case of function registration race conditions. TLDR: I think the small conflict risk is worth the major convenience of global functions.

Compatibility mode:

To disable the new global functions, define a constant called HYDE_COMPATIBILITY_MODE and set it to true, and the new functions will not be registered. The constant should be defined early on, for example in a bootstrap file.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (de2f20e) to head (ffd7557).

Additional details and impacted files

@@              Coverage Diff              @@
##              master     #1592     +/-   ##
=============================================
  Coverage     100.00%   100.00%             
- Complexity      1748      3496   +1748     
=============================================
  Files            180       360    +180     
  Lines           4727      9460   +4733     
=============================================
+ Hits            4727      9460   +4733     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[caendesilva]

Reminder to people reading this: HYDE_COMPATIBILITY_MODE must be defined before the autoloader is required.