Django middleware filtering settings

[lrafeei]

This PR adds three settings related to Django middleware instrumentation:

instrumentation.django_middleware.enabled
instrumentation.django_middleware.exclude
instrumentation.django_middleware.include

Where the exclude/include settings follow similar rules to attribute exclude/include: https://docs.newrelic.com/docs/apm/agents/python-agent/attributes/enabling-disabling-attributes-python/#rule-specific-wins

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ ACTION	actionlint	6		0	0	0.74s
✅ MARKDOWN	markdownlint	7	0	0	0	1.21s
✅ MARKDOWN	markdown-link-check	7		0	0	18.88s
✅ PYTHON	ruff	924	7	0	0	0.88s
✅ PYTHON	ruff-format	924	9	0	0	0.32s
✅ YAML	prettier	13	0	0	0	1.27s
✅ YAML	v8r	13		0	0	6.38s
✅ YAML	yamllint	13		0	0	0.64s

See detailed report in MegaLinter reports

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.00000% with 17 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.80%. Comparing base (2c80b9f) to head (830fdae).

Files with missing lines	Patch %	Lines
newrelic/hooks/framework_django.py	80.00%	5 Missing and 5 partials ⚠️
newrelic/core/config.py	53.84%	6 Missing ⚠️
newrelic/config.py	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1444      +/-   ##
==========================================
- Coverage   81.33%   80.80%   -0.54%     
==========================================
  Files         208      208              
  Lines       23563    23625      +62     
  Branches     3716     3734      +18     
==========================================
- Hits        19164    19089      -75     
- Misses       3139     3313     +174     
+ Partials     1260     1223      -37     

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