Command line config

This feature enables command line config instead of requirement to have .munit and target.hxml files available. Some undocumented command line arguments has been used from original approach munit run {config} {src} {testbin} {report} the rest is avaialbe using config: or target: prefixes. Following .munit:

version=munit
src=src/test/haxe
bin=bin/test
report=bin/test-report
hxml=munit.hxml
classPaths=src/main/haxe
coverageIgnoredClasses=module

and target.hxml file:

#neko
-main TestMain
-lib munit
-cp src/main/haxe
-cp src/test/haxe
-neko bin/test/neko_test.n

can be now executed as following command (notice cliconfig):

haxelib run munit test cliconfig src/test/haxe bin/test bin/test-report config:classPath src/main/haxe config:coverageIgnoredClass module target:-main TestMain target:-lib munit target:-cp src/main/haxe target:-cp src/test/haxe target:-neko bin/test/neko_test.n

Updates in code should not affect any previous munit functionality.