Asdf Intermediate table entry flushing

[Miauwkeru]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 94.02985% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.89%. Comparing base (72b05e7) to head (08f4761).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
dissect/evidence/asdf/asdf.py	93.98%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #48      +/-   ##
==========================================
+ Coverage   71.44%   72.89%   +1.45%     
==========================================
  Files          23       23              
  Lines        1387     1476      +89     
==========================================
+ Hits          991     1076      +85     
- Misses        396      400       +4     

Flag	Coverage Δ
unittests	72.89% <94.02%> (+1.45%)	⬆️

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[Miauwkeru]

Intermediate flushing is added, and added logic to find the table entries and combine it with _table_fit.
The table_index struct contains information about the previous table, and the indexes that where flushed to the current table. This is to have a faster lookup if we are only interested in one specific index.

I can think of one limitation tho. Once the table flushed all its contents to disk, there is the issue that duplicate data can be written. Maybe it is a good idea to have an additional asdf tool to remove this kind of duplication from the file.