Added new lineage BA.1.19 from #475 with 2662 new sequence designations and 2 updated from BA.1

Author: chrisruis

lineage_notes.txt

@@ -631,6 +631,7 @@ BA.1.16.1	Alias of B.1.1.529.1.16.1, Thailand, Cambodia and Indonesia lineage
 BA.1.17	Alias of B.1.1.529.1.17, European lineage
 BA.1.17.1	Alias of B.1.1.529.1.17.1, Australia lineage
 BA.1.18	Alias of B.1.1.529.1.18, Europe and North America lineage, from pango-designation issue #474
+BA.1.19	Alias of B.1.1.529.1.19, Europe lineage
 BA.2	Alias of B.1.1.529.2, from pango-designation issue #361
 BA.2.1	Alias of B.1.1.529.2.1, UK lineage
 BA.2.2	Alias of B.1.1.529.2.2, Hong Kong lineage