Issue #2859304 by quietone, heddn, Jo Fitzgerald, maxocub, rivimey, phenaproxima, jhodgdon: Show field type migrations correctly in Migrate Drupal UI

Issue #2906203 by maxocub: Widgets/formatters: D7 Plain text fields incorrectly migrated to D8 as Text (formatted)

Issue #2842222 by maxocub, heddn, vasi, Jo Fitzgerald, masipila, jeffwpetersen, catch, phenaproxima, markabur, quietone, mikeryan: D7 Plain text fields incorrectly migrated to D8 as Text (formatted)

Issue #2833206 by quietone, heddn, maxocub, Jo Fitzgerald, joelpittet, phenaproxima, jibran: Convert Migrate's cckfield plugins to use the new field plugins