[SW-1628][FollowUp] Create migration guide document with breaking changes so far added to 3.28 (#1550)
[SW-1628][FollowUp] Create migration guide document with breaking changes so far added to 3.28 (#1550)

(cherry picked from commit 37de422cb2bcad55fd2adbcadccd37f277aa5617)

h2oai/sparkling-water,h2oai/sparkling-water,h2oai/sparkling-water,h2oai/sparkling-water