ManUtils: Move, use ExtUtils::MakeMaker and get rid of AnyEvent

I mean, I like AnyEvent, but this can be done with core modules as well
(albeit somewhat more verbose and error-prone...)

ManUtils/Makefile.PL

@@ -0,0 +1,10 @@
+use ExtUtils::MakeMaker;
+
+WriteMakefile(
+    NAME => 'ManUtils',
+    VERSION_FROM => 'ManUtils.pm',
+    LICENSE => 'mit',
+    NO_MYMETA => 1,
+    MIN_PERL_VERSION => 'v5.36',
+    LDFROM => 'ManUtils.o ../web/target/release/libweb.a -lpthread',
+);