change uniqueId

[cedryck1]

To fix the problem of notes from pdf not being created.

Example in pdf.lua file from Koreader :

["bookmarks"] = {
[1] = {
["page"] = 286,
["chapter"] = "12. Routines: Workout Programs",
["datetime"] = "2022-12-07 22:17:38",
["notes"] = "True brawn and power are developed by hard training sessions, not by long training sessions. Quality over quantity is an excellent motto for strength.",
["pos0"] = {
["page"] = 286,
["x"] = 113.53055169962,
["rotation"] = 0,
["y"] = 94.348024444745,
["zoom"] = 2.4036458333333,
},
["pos1"] = {
["page"] = 286,
["x"] = 355.4808284805,
["rotation"] = 0,
["y"] = 104.26570541035,
["zoom"] = 2.4036458333333,
},

pos0 and pos1 not always a string, using datetime instead for uniqueId.

[Edo78]

I'm back in business!

First of all, thank you so much for this PR, and my sincerest apologies for the very late reply.

What kept me from merging it sooner is the concern that it might break compatibility with previous versions of the plugin or affect existing notes. I really appreciate your approach, and I see a lot of value in the direction you've taken.

Before integrating it, I want to make sure that older notes remain intact and that users upgrading to the new version won't face unexpected issues.

Thank you again for your contribution—it’s incredibly motivating to see this level of engagement. I’ll keep everyone posted on my progress, and I recommend subscribing to notifications to stay updated on future releases!