Add migrations reset command

[dereuromark]

Summary

Implements the migrations reset command as requested in #972.

This is a "nuclear option" that:

• Drops all tables in the database (including tracking tables like cake_migrations, phinxlog)
• Re-runs all migrations from scratch

Features

• Interactive Y/N confirmation (defaults to N) before dropping tables
• --dry-run flag to preview what would be dropped
• --no-lock flag to skip lock file generation
• Supports --plugin, --connection, and --source options
• Dispatches Migration.beforeReset and Migration.afterReset events
• Handles foreign key constraints across MySQL, PostgreSQL, SQLite, and SQL Server

Usage

migrations reset              # Reset default connection
migrations reset -c test      # Reset test connection  
migrations reset --dry-run    # Preview without changes
migrations reset --no-lock    # Skip lock file generation

Closes #972

[dereuromark]

Maybe we skip those and instead release the new major. The if/else switches to have all tests green seem heavy.

[jamisonbryant]

The test results are confusing! It was originally failing looking for <info>migrations:</info> and so I fixed it, but now a bunch of test are failing looking for <info>migrations</info>:!