Add a CI pipeline

Basically, I have added the missing fields

I migth change the operator priority later on.

also, add -I/usr/local/include/ in CCOpt oasis rules for packages
that depend on gmp, as darwin can not find headers in this dir
(bouh).  There is probably a better way to turn arouns that, but...

It was avoiding to override the file somefile.rif by creating a
somefile-i.rif; but practice, it appears to be very cumbersome.

Print the seed when used from a RdbgPlugin

Rework the lutin tutorial.

I'm pretty sure this used to be supported. Why did I remove it?
unfortunately, the ne.ml file was not tracked by git (and by mistake)
at this time.

also, begin to replace lurettetop by rdbg -lurette in tests

- fix the column number (was the char number in the file)
- fix the depth of exit events

+ fix the test breaks caused by previous commits (seed)

Also, install the manual in the lib install directory.

Indeed, "opam install camlidl" does put dllcamlidl.so into stublibs.

also, rename call-via-socket.ml inti call_via_socket.ml to avoid ocaml warning.

also, rename call-via-socket.ml inti call_via_socket.ml to avoid ocaml warning.

just a commit to increment the version number to make sure it works

Really, it is the job of lutin to set the seed.

Also, unplug the "calling lutin from lustre and C" tests, as they are
actually broken since the move to oasis/ocamlbuild.