test: Add CLI commands to project

[limbonaut]

This PR introduces a command-line interface system that enables execution of SentrySDK operations for integration testing purposes. The system is extensible, with new commands can be added easily in the future.

• Enables test: Add end-to-end integration tests #447.

Key Additions

CLI Command System

• CLI parser for COMMAND [ARGS...] format -- with automatic arguments parsing and help generation
• Android adapter for intent-to-CLI argument conversion
• Integration into the main application flow

Available Commands

• crash-capture - Generate controlled crash for testing
• crash-send - Process and send crash report from previous session
• message-capture - Capture test message with optional severity level
• runtime-error-capture - Trigger runtime error in Godot with stack trace validation
• run-tests - Execute unit test suites
• help - Display command usage

Usage

godot --headless --path ./project -- COMMAND [ARGS...]

Examples:

godot --headless --path ./project -- message-capture "Test message" "error"
godot --headless --path ./project -- crash-capture
godot --headless --path ./project -- run-tests "res://test/suites/"