Sync projects as headings

[olexs]

I use projects extensively in my Things setup, and wanted to have an option to use projects as subheadings when syncing tasks, in the same way as areas are used. The new feature is implemented as an option, disabled by default, so the previous default behavior (group by areas only) is maintained unless the user explicitly enables the option.

The new behaviour is as follows:

• "Include project" disabled (default), same behaviour as before the new feature: -- Task has NO AREA: task is directly listed under "Logbook" -- Task has AN AREA: task is listed under the "Area" subheading, 1 level below "Logbook"
• "Include project" enabled: -- Task has NO AREA and NO PROJECT: task is directly listed under "Logbook" -- Task has AN AREA and NO PROJECT: task is listed under the "Area" subheading, 1 level below "Logbook" -- Task has AN AREA and A PROJECT: task is listed under the "Area" subheading (area has priority over project) -- Task has NO AREA and A PROJECT: task is listed under the "Project" subheading, 1 level below "Logbook"

Relates to #26. The desired implementations described there are a bit more complex, but should also be doable based on my changes.

Additionally, I added an option to pad the area/project subheadings with a preceding newline. Same thing, disabled by default to maintain previous behavior on update.

[kovstas]

I tested it on my obsidian, looks cool. Thank you! I guess this PR closes #40.

[ekexium]

Exactly what I need. 👍

[netfly]

Please merge this 👍

I just came here to fork the repos and build this by my self. But now I just grabbed this code ..... awesome, Thank you.

[martedesco]

Thanks @olexs ! @liamcain, @olexs addition looks pretty cool. I would love to see this PR merged 🙌🏼

[kakkoyun]

It'd be awesome to this is merged 🎉

Thanks @olexs

[pwntester]

+1 on the request to merge this!

[buylife]

@liamcain I'd like to think the day we'll have this merged will come soon.

[buylife]

@liamcain Thank you so much! Appreciate it 👍