added rust support

[cocoa-xu]

Hi @nihui, this PR adds rust support for ruapu. It should close #13 /

[nihui]

The glue that binds two languages is mixed in C
Let's move them into their own folders

|ruapu.h
|main.c
|
|python+
|      |ruapu-binding.c
|      |pyproject.toml
|
|rust+
|    |Cargo.toml
|    |lib.rs

[cocoa-xu]

The glue that binds two languages is mixed in C Let's move them into their own folders

|ruapu.h
|main.c
|
|python+
|      |ruapu-binding.c
|      |pyproject.toml
|
|rust+
|    |Cargo.toml
|    |lib.rs

No problem! It's done now~ Although I'm not quite sure which option I should use to specify the location of the pyproject.toml file in the pypa/cibuildwheel step in pypi.yml...

[nihui]

The glue that binds two languages is mixed in C Let's move them into their own folders

|ruapu.h
|main.c
|
|python+
|      |ruapu-binding.c
|      |pyproject.toml
|
|rust+
|    |Cargo.toml
|    |lib.rs

No problem! It's done now~ Although I'm not quite sure which option I should use to specify the location of the pyproject.toml file in the pypa/cibuildwheel step in pypi.yml...

pypa/cibuildwheel has some options

  package-dir:
    description: 'Input directory, defaults to "."'
    required: false
    default: .
  output-dir:
    description: 'Folder to place the outputs in, defaults to "wheelhouse"'
    required: false
    default: wheelhouse
  config-file:
    description: 'File containing the config, defaults to {package}/pyproject.toml'
    required: false
    default: ''

[cocoa-xu]

ruapu::rua() is added to the Rust binding. I'll leave the python one in #51
/cc @Yoh-Z

[nihui]

Thanks for your contribution !