WIP: kdesrcdep lang

This is a very early draft of work on building a "kdesrcdep" DSL and associated structure to describe package manager dependencies across various distributions at a more fine grained level than what is currently possible.

My intent is to regularly update this in the hopes of early feedback.

---

A rough description of the grammar (note, the lexer does not implement all keywords yet):

distro-name

string

distro-version

string

distro-package

string

dependency-name

string

module-name

string

indent

'  '

distro-configuration

'distro' distro-name 'ver' distro-version ':'
// WIP

distro-package-list

distro-name 'ver' distro-version ':'
  indent distro-package...

dependency

'dependency' dependency-name 'from' 'distro' ':' 
  indent distro-package-list...

module

'module' module-name ':' 
  indent dependency-name...