Handle MySQL and MariaDB specific differences for DumpSchema

[dossy]

Note

Adds version-aware dump behavior and testability to MySQL driver.

• Introduces getMysqldumpVersion to parse dump client output, determine mysql vs mariadb, version, and select mysqldump or mariadb-dump
• Changes mysqldumpArgs to accept version info and switch to --ssl-mode=* for MySQL ≥ 8 while retaining legacy flags otherwise; preserves existing host/port/socket/user/pass handling
• Updates DumpSchema to invoke the detected dump command with version-appropriate args
• Adds exec command/lookpath indirection for tests and comprehensive unit tests for version detection and args across MySQL/MariaDB variants

^{Written by Cursor Bugbot for commit da6e82b. This will update automatically on new commits. Configure here.}