Navigate back and forward

### 🚀 The feature, motivation and pitch

One feature that I'm missing from Obsidian is the ability to navigate back and forward. Ideally it would be in the form of two new commands: `:ObsidianBack` and `:ObsidianForward`.

### Alternatives

I realize that this can somewhat be achieved using CTRL-O and CTRL-I, however it's not quite the same for two reasons:
- the jumplist includes cursor positions even within the same file (sometimes you need to press CTRL-O multiple times to actually jump back to your previous note);
- the jumplist is universal (it's shared across all buffers), while in Obsidian each note has a different "jumplist".

### Additional context

_No response_

Start by locating the command definitions for :ObsidianBack and :ObsidianForward and reading how navigation is currently handled; the issue names no files or tests. Done means each note has its own back and forward history, without cursor-only jumps or a history shared across buffers.

Written by the indexing model from the issue text.