feat: add support for column-level location data

[P403n1x87]

Description of the Change

This change adds support for the version 2 of the MOJO binary format specification, which introduces the extra column-level location information.

Alternate Designs

N. A.

Regressions

None expected.

Verification Process

Added an extra test case to validate the parsing of the new MOJO format.

[codecov]

Codecov Report

Base: 73.79% // Head: 73.83% // Increases project coverage by +0.04% 🎉

Coverage data is based on head (dad5f2e) compared to base (107db3b).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #15      +/-   ##
==========================================
+ Coverage   73.79%   73.83%   +0.04%     
==========================================
  Files          14       16       +2     
  Lines        1309     1464     +155     
  Branches      199      215      +16     
==========================================
+ Hits          966     1081     +115     
- Misses        289      321      +32     
- Partials       54       62       +8     

Impacted Files	Coverage Δ
austin/format/mojo.py	86.95% <100.00%> (+0.38%)	⬆️
austin/__init__.py	71.01% <0.00%> (ø)
austin/format/__init__.py	100.00% <0.00%> (ø)

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