[Feature request]: Allow adding bookmarks

[bad5ect0r]

Usecase:

During reverse engineering I like to be able to return to points in code that are not immediately obvious. For example, I want to bookmark all points in the binary where certain log messages are generated. In general being able to see what claude has marked using bookmarks would be ideal.

[CX330Blake]

I thinks it's a good issue, I'll take a look at the Binja's API doc to make sure if there's some API to create/view the bookmarks. Thanks for the issue, if you want to create an PR, it's welcomed.