Laravel contrib: packaging preparation.

[ChrisLightfootWild]

Test export-ignore git attributes for packaging of Laravel instrumentation.

cd src/Instrumentation/Laravel
git archive --format=tar HEAD | tar t
README.md
_register.php
composer.json
src/
src/CacheWatcher.php
src/ClientRequestWatcher.php
src/ExceptionWatcher.php
src/HeadersPropagator.php
src/LaravelInstrumentation.php
src/LogWatcher.php
src/QueryWatcher.php
src/Watcher.php

[codecov]

Codecov Report

Merging #187 (55fcdd3) into main (029482e) will not change coverage.
The diff coverage is n/a.

❗ Current head 55fcdd3 differs from pull request most recent head 4fc7b0c. Consider uploading reports for the commit 4fc7b0c to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #187   +/-   ##
=========================================
  Coverage     34.73%   34.73%           
  Complexity      814      814           
=========================================
  Files            71       71           
  Lines          3078     3078           
=========================================
  Hits           1069     1069           
  Misses         2009     2009           

Flag	Coverage Δ
7.4	46.18% <ø> (ø)
8.0	34.79% <ø> (ø)
8.1	34.82% <ø> (ø)
8.2	34.67% <ø> (ø)

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