fix: Move thorough search through search.filters w/ workspaces (#2703)

Do not just pick first from search.filters, consider all options,
filtering based on git-root and workspaces config

Fix: atuinsh/atuin#2700
Might Fix: atuinsh/atuin#2536

Wrote a few simple unit tests, and tried it by running the client
locally. Not sure about which of "[search] filters" vs "workspaces"
should be more respected, so i made it so if workspaces = false,
regardless of whats in "[search] filters" workspace gets filtered out.

First time looking at atuins code, let me know if this needs any
changes.

edit: (from my post here:
https://github.com/atuinsh/atuin/issues/2536#issuecomment-2808053862)

```
workspaces = true
[search]
filters = [ "workspace", "directory", "session", "global" ]
```

| `^R` for the ... time| in a git repo | any other dir|
| ------------- | ------------- | ------------- |
| first  | workspace  | directory|
| second  | directory  | session|
| third| session  | global|
| fourth | global  | directory |
| fifth | workspace  | session|
| sixth  | directory  | global |


![Image](https://github.com/user-attachments/assets/33150e0a-d219-44d1-8994-b1f98accdfc3)

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## Checks
- [X] I am happy for maintainers to push small adjustments to this PR,
to speed up the review cycle
- [X] I have checked that there are no existing pull requests for the
same thing
- #1655 might be related, but it seems to also implement code that is
already merged, and has been open for over a year, hope its ok to
suggest this

---------

Co-authored-by: Michelle Tilley <michelle@michelletilley.net>

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