Allow specifying options from command line

[stephen-hqxu]

The issue

• [X] I could not find a similar issue and confirm this is a new feature.

The limitation

Most options and settings are passed via INI in the demo application. Whereas some settings like initial rendering resolution and viewing distance are hardcoded. Changing to them frequently via INI or re-compiling the source code is inconvenient during developmeng testing.

The solution

Allow SuperDemo+ to take certain frequently changed settings from the command line.

The additional

Implement a general purpose command line parser in SuperAlgorithm+Host so it can handle arbitary command line format, allowing me to add more options in the future.

[stephen-hqxu]

May need to refactor STPTextureDefinitionLanguage and rip the lexer out into a separate class, like a general-purpose lexer that allows application to define tokens and identifiers.

[stephen-hqxu]

Done

The command line parser is implemented in the algorithm host package as STPCommandLineParser.