[azure monitor opentelemetry] Adding Browser SDK Loader functionality

[hectorhdzg]

Description

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• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
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Testing Guidelines

• Pull request includes test coverage for the included changes.

[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

azure-monitor-opentelemetry

[Copilot]

Pull Request Overview

This pull request adds Browser SDK Loader functionality to the Azure Monitor OpenTelemetry Python package. The feature enables automatic injection of Application Insights JavaScript SDK snippets into HTML responses for supported web frameworks, starting with Django middleware support.

Key changes include:

• Implementation of web snippet injection logic with compression support
• Django middleware for automatic snippet injection
• Configuration system for browser SDK settings
• Integration with the main configure_azure_monitor function

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/browserSdkLoader/test_snippet_injector.py	Comprehensive test suite for WebSnippetInjector class covering injection logic, compression handling, and content detection
tests/browserSdkLoader/test_integration.py	Integration tests for browser SDK loader with configure_azure_monitor function
tests/browserSdkLoader/test_django_middleware.py	Test suite for Django middleware functionality including configuration and response processing
tests/browserSdkLoader/test_config.py	Tests for BrowserSDKConfig configuration class
tests/browserSdkLoader/__init__.py	Empty test package initialization file
dev_requirements.txt	Added brotli dependency for compression support
_utils/configurations.py	Updated configuration utilities to support browser SDK loader settings
_constants.py	Added browser SDK loader configuration constant
_configure.py	Integration of browser SDK loader setup into main configuration function
snippet_injector.py	Core implementation of web snippet injection with compression support
django_middleware.py	Django middleware implementation for automatic snippet injection
_config.py	Configuration class for browser SDK settings
__init__.py	Browser SDK loader module initialization and framework setup

[JacksonWeber]

LGTM