initial NYI.pm implementation

This commit introduces some code/constant duplication; my attempts to factor it out
into a lexical sub or a lexical variable holding a block were not successful -
there former aren't found (see RT #67868), the latter produce Null PMC access
in invoke()

build/Makefile.in

@@ -129,6 +129,7 @@ SETTING = \
   src/setting/List.pm \
   src/setting/Match.pm \
   src/setting/Num.pm \
+  src/setting/NYI.pm \
   src/setting/Object.pm \
   src/setting/Operators.pm \
   src/setting/Pair.pm \

src/setting/NYI.pm

@@ -0,0 +1,14 @@
+multi caller(){
+    die 'caller() is not yet implemented in Rakudo, sorry';
+}
+multi context(){
+    die 'context() is not yet implemented in Rakudo, sorry';
+}
+multi want(){
+    die 'want() is not yet implemented in Rakudo, sorry';
+}
+multi runinstead(){
+    die 'runinstead() is not yet implemented in Rakudo, sorry';
+}
+
+# vim: ft=perl6