feat: Add bank sync and implement it for the simplefin demo data.

[bvanelli]

• Add reconciliation of transactions using fuzzy matching
• Add pydantic models and endpoint call for the bank sync methods (tested with simplefin)

@latetedemelon @JaxOfDiamonds let me know what you think, I did not have time to test it since it took me way longer than I expected to write it.

I did not have any time to test it so it might be buggy.

I also could not validate the models with the responses from the API from gocardless, that I assume is similar. I'm not sure if they have a dev token just like simplefin has, if you guys know (or can provide an anonimized response) let me know.

Here is one example:

from actual import Actual

with Actual(base_url="http://localhost:5006", password="<your password>", file="<your file>") as actual:
    added = actual.run_bank_sync()
    print(f"Imported or updated {len(added)} transactions!")
    actual.commit()

This will only work once the first sync was already done, and I tested it by deleting the latest x transactions and importing again.

Closes https://github.com/bvanelli/actualpy/issues/25

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 96.68675% with 11 lines in your changes missing coverage. Please review.

Project coverage is 96.45%. Comparing base (5de4026) to head (65d9ea1).

Files	Patch %	Lines
actual/api/__init__.py	80.95%	4 Missing :warning:
actual/utils/title.py	89.18%	4 Missing :warning:
actual/queries.py	95.55%	2 Missing :warning:
actual/api/models.py	98.92%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #27 +/- ## ========================================== - Coverage 96.54% 96.45% -0.10% ========================================== Files 9 12 +3 Lines 1447 1691 +244 ========================================== + Hits 1397 1631 +234 - Misses 50 60 +10 ```

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