[Doc] update plugin dev Hello tutorial

doc/developer/advance.tex

doc/developer/macros.sty

doc/developer/tutorial.tex

doc/developer/tutorial/hello/Makefile

doc/developer/tutorial/hello/src/Hello.ml

doc/developer/tutorial/hello/src/dune

doc/developer/tutorial/hello/src/dune-project

doc/developer/tutorial/hello/src/hello_test.c

doc/developer/tutorial/hello/src/ptests_config

doc/developer/tutorial/hello/src/run_call_print_bug.ml

doc/developer/tutorial/hello/src/test_config

doc/developer/tutorial/hello/v1-simple/Hello.ml

doc/developer/tutorial/hello/v1-simple/dune

doc/developer/tutorial/hello/v1-simple/dune-project

doc/developer/tutorial/hello/v1-simple/hello_world.ml

doc/developer/tutorial/hello/v2-register/Hello.ml

doc/developer/tutorial/hello/v2-register/dune

doc/developer/tutorial/hello/v2-register/dune-project

doc/developer/tutorial/hello/v2-register/hello_world.ml

doc/developer/tutorial/hello/v3-log/Hello.ml