Add DROP to standard SQL reserved word list

Author: Uku Pattak

src/languages/StandardSqlFormatter.js

@@ -5,7 +5,7 @@ const reservedWords = [
     "ACCESSIBLE", "ACTION", "AGAINST", "AGGREGATE", "ALGORITHM", "ALL", "ALTER", "ANALYSE", "ANALYZE", "AS", "ASC",
     "AUTOCOMMIT", "AUTO_INCREMENT", "BACKUP", "BEGIN", "BETWEEN", "BINLOG", "BOTH", "CASCADE", "CASE", "CHANGE", "CHANGED", "CHARACTER SET",
     "CHARSET", "CHECK", "CHECKSUM", "COLLATE", "COLLATION", "COLUMN", "COLUMNS", "COMMENT", "COMMIT", "COMMITTED",
-    "COMPRESSED", "CONCURRENT",
+    "COMPRESSED", "CONCURRENT", "DROP",
     "CONSTRAINT", "CONTAINS", "CONVERT", "CREATE", "CROSS", "CURRENT_TIMESTAMP", "DATABASE", "DATABASES", "DAY", "DAY_HOUR", "DAY_MINUTE",
     "DAY_SECOND", "DEFAULT", "DEFINER", "DELAYED", "DELETE", "DESC", "DESCRIBE", "DETERMINISTIC", "DISTINCT", "DISTINCTROW", "DIV",
     "DO", "DUMPFILE", "DUPLICATE", "DYNAMIC", "ELSE", "ENCLOSED", "END", "ENGINE", "ENGINE_TYPE", "ENGINES", "ESCAPE",