Add Chinese Num To Word

[HCO168]

No description provided.

[Laifsyn]

Heyo. it might be needed to submit a commit where you remove the .idea/** files to avoid bloating the repo, as well as adding them to .gitignore

[Laifsyn]

yuan might overlap or conflict a possible preference of 块 (kuai) and 元 (yuan) since in Guangdong 块 could be used in colloquial context[1].

Granted, all this is written chinese, so it's up for debate whether you want to write a number in their colloquial representation)

[HCO168]

Sure, I will make those changes.

[Laifsyn]

Somethings to consider:

1. Document the preferences in src\num2words.rs, Num2Word::prefer method.
2. Make usage of Rust's rustfmt via cargo fmt.
3. Resolve Rust's clippy lints (maybe via cargo check).
4. Because you're making use of methods that are only used in tests, the unused lint is getting triggered. So in case you look to keep them for w/e reason, you can add the #[cfg_attr(not(test), expect(unused))] // Currently used only on tests right above the method to silence the lint until you find a usage outside of tests (or actually use them).

IDEs LSPs like VSCode's rust-analyzer usually makes point 2 and 3 easier to solve.

[HCO168]

The problems are fixed