feat: add automatically incremented note id feature

[vargab95]

I use Joplin to manage tasks in some of my projects. I reference these tasks within Joplin by copying the markdown link or using the node id. However, it is challenging to uniquely identify tasks outside of Joplin, such as in commit messages.

To address this issue, I propose introducing a new special variable called template_auto_incremented_prefix. This variable will add a note id prefix in the format of "prefix string-incremented id: " (e.g., "TEST-1: Initial commit" and "TEST-2: First feature").

Any comments or improvement ideas are welcome.

[Stainless5792]

@vargab95 Thanks so much for the wonderful work, it's awesome ! I really want this feature can be added to the plugin, so @nishantwrp would you please make this happen?