Options (raphaelreyna#18)

* Add compilation count and compiler options to generate route

* Rewrite (raphaelreyna#17)

* All original tests now pass & gen route is 200+ lines shorter

* Extract json request -> job logic from server route to job pkg

Fix missing resource bug for registered resources

Add 'onMissingKey' option for PDF generating route

Close raphaelreyna#1 using Hashicorp's LRU cache

Add support for custom delimiters

Response includes tex compiler error string upon error

Partially improve error logging/reporting

Improve error logging

Update env vars

Add basic health check