support java.nio.file.Files/write

[mk]

I've been wanting to use babashka.fs for writing files using nio

• for byte arrays https://docs.oracle.com/javase/7/docs/api/java/nio/file/Files.html#write(java.nio.file.Path,%20byte[],%20java.nio.file.OpenOption...)
• and chars https://docs.oracle.com/javase/7/docs/api/java/nio/file/Files.html#write(java.nio.file.Path,%20java.lang.Iterable,%20java.nio.charset.Charset,%20java.nio.file.OpenOption...)

Might supporting those be a sensible addition? Would also require an implementation ->standard-open-option analogous to ->copy-opts.

[borkdude]

Seems good to me

[borkdude]

write-bytes docs:

https://github.com/babashka/fs/blob/master/API.md#write-bytes

[borkdude]

Here is write-lines:

https://github.com/babashka/fs/blob/master/API.md#write-lines

Please review to check if this is something you were thinking of.