Add repository and functions around plugin host set membership (#1629)

Co-authored-by: Todd <T.Alan.Knight@gmail.com>

internal/errors/code.go

@@ -89,6 +89,10 @@ const (
 	// reasons related to the state of the DDL and/or inputs (such as we're
 	// already in the right state and don't want to end up writing oplogs).
 	GracefullyAborted Code = 1106
+	// UnexpectedRowsAffected indicates that an action expected to operate on a
+	// specific number of records returned a different count, e.g. if you
+	// expected to delete three items and only one was deleted.
+	UnexpectedRowsAffected Code = 1107
 
 	// Migration setup errors are codes 2000-2999
 	MigrationIntegrity Code = 2000 // MigrationIntegrity represents an error with the generated migration related code