feat(agent): Add supportability metrics for packages that provide major version

[hahuja2]

This PR creates a new supportability metric that will provide information on what major version of the package is being used. The packages that provide the major version and will send up this supportability metric are:

• Drupal
• Guzzle
• Laravel
• Monolog
• Predis
• Slim
• Wordpress.

[mfulb]

I think all versions of Guzzle and Monolog will give you a major version. Probably other frameworks potentially will give us just major info.

[newrelic-php-agent-bot]

Test Suite	Status	Result
Multiverse	❌	0/9 passing
SOAK	✅	51/51 passing

[hahuja2]

I think all versions of Guzzle and Monolog will give you a major version.

Good point, I have added supportability metrics for Guzzle and Monolog by major version also: 5248b97

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 69.56522% with 14 lines in your changes are missing coverage. Please review.

Project coverage is 78.73%. Comparing base (1717ca9) to head (55c1e1e).
Report is 4 commits behind head on dev.

Files	Patch %	Lines
agent/fw_slim.c	0.00%	5 Missing ⚠️
agent/fw_drupal8.c	25.00%	3 Missing ⚠️
agent/fw_wordpress.c	25.00%	3 Missing ⚠️
agent/fw_laravel.c	0.00%	2 Missing ⚠️
agent/php_agent.c	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #868      +/-   ##
==========================================
- Coverage   78.76%   78.73%   -0.04%     
==========================================
  Files         193      193              
  Lines       27125    27154      +29     
==========================================
+ Hits        21365    21379      +14     
- Misses       5760     5775      +15     

Flag	Coverage Δ
agent-for-php-7.0	77.46% <45.65%> (-0.36%)	⬇️
agent-for-php-7.1	77.22% <45.65%> (?)
agent-for-php-7.2	78.15% <69.56%> (+<0.01%)	⬆️
agent-for-php-7.3	78.17% <69.56%> (+<0.01%)	⬆️
agent-for-php-7.4	77.87% <69.56%> (+<0.01%)	⬆️
agent-for-php-8.0	77.90% <69.56%> (+<0.01%)	⬆️
agent-for-php-8.1	77.88% <69.56%> (+<0.01%)	⬆️
agent-for-php-8.2	77.48% <69.56%> (+<0.01%)	⬆️
agent-for-php-8.3	77.48% <69.56%> (+<0.01%)	⬆️

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[mfulb]

Looks good!