Allow to change default for "draft"

[Programie]

I've configured Hugo to use draft: true by default for all notes so I have to explicitly specify draft: false in the notes I want to publish using Hugo.

Unfortunately, this setup results in hugo-obsidian still processing all notes and building the index for them. This results in the content of the other notes being publicly available in the contentIndex.json file.

My proposal to eliminate that issue would be to add a new option like -draft=true to allow changing the default draft status.