Add support for `watchos` target

[zhangz1han]

Kotlin Docs suggests that the library provide support for watchos

This also includes androidNative if possible

The current versions of watchos in the Maven repository are between 0.1.2 and 0.1.4, and the latest release is missing

[itboy87]

@zhangzih4n It will available in upcoming version

[itboy87]

@zhangzih4n watchos targets added in version 0.2.0

[zhangz1han]

@itboy87 Are there any plans to add the androidNative target? If so, Ksoup will fully support all stable tier targets