[Kernel] add option -cpp-extra-args-per-file

doc/userman/user-changes.tex

doc/userman/user-sources.tex

man/frama-c.1

man/frama-c.1.header

man/frama-c.1.md

src/kernel_services/ast_queries/file.ml

src/kernel_services/cmdline_parameters/parameter_builder.ml

src/kernel_services/cmdline_parameters/parameter_sig.mli

src/kernel_services/plugin_entry_points/kernel.ml

src/kernel_services/plugin_entry_points/kernel.mli

tests/misc/cpp-extra-args-per-file1.c

tests/misc/cpp-extra-args-per-file2.c

tests/misc/oracle/cpp-extra-args-per-file1.res.oracle