Add an option to use Prism parser

[takaram]

Ruby 3.3 introduced Prism parser, and it is also released as a gem.
The latest version of Prism includes Prism::Tarnslaion::Parser, a wrapper class to make Prism compatible with parser gem (whitequark/parser).

This PR tries to replace the current parser (Parser::Ruby32) with Prism::Tranlation::Parser.
Since this is just an experiment, the default parser remains to be that of parser gem. Instead I added --prism CLI option to switch the parser.

Here are some advantages with Prism:

• Compile becomes faster
• Parser gem-related issue (Incompatibility in multiple assignment #1703) is resolved

Todo:

• Support using Prism in opalopal
  • Prism can be run in JavaScript through wasm
• Run tests with Prism

cc: @kddnewton

[kddnewton]

Amazing!

[hmdne]

There's a small issue for opalopal as of now which regards loading of WASM modules - they can be only loaded async (at least in Chromium). I have a plan to support such workflow, but it will take some time.

Other than that, before we flip the default, we will also have to check regressions in source maps.