Implement Basic Procedures for Argument Parsing

[rennsax]

Implement prototype for #11.

A new record type scheme-lsp-args is defined. Currently, only the oprands field is used, to keep the command line interface consistent.

Further plan: we may adjust the user experience of the CLI. For example, specify multi-thread with options, not oprands.

[ufo5260987423]

I accidently merged. But this pr is actually not correct.
The question is that:

1. We don't need scheme-lsp-args, not only there's a lsp named scheme-lsp-server, but also this record type won't be used twice in this program;
2. you should keep the help information and usage identical to origin, changing this information is actually a big step with version increasing.