Add `Migrator::with_migrations()` constructor #1580

Job	Run time
Integration Test (macOS-13)	1m 14s
Integration Test (macOS-latest)	34s
Integration Test (ubuntu-latest)	29s
Functional Test (SQLite)	32s
Check	38s
Functional Test (PostgreSQL)	42s
Functional Test (MySQL)	49s
Build (windows-latest)	4m 35s
Build (macOS-latest)	31s
Build (macOS-13)	57s
Build (ubuntu-latest)	47s
	11m 48s

Provide feedback