add submodules

.gitmodules

+[submodule "doc_module_vitis"]
+	path = doc_module_vitis
+	url = http://vm09.veremes.net/Documentation/doc_module_vitis.git
+[submodule "doc_module_pdesi"]
+	path = doc_module_pdesi
+	url = http://vm09.veremes.net/Documentation/doc_module_pdesi.git
+[submodule "doc_module_signaletique"]
+	path = doc_module_signaletique
+	url = http://vm09.veremes.net/Documentation/doc_module_signaletique.git
+[submodule "doc_module_vmap"]
+	path = doc_module_vmap
+	url = http://vm09.veremes.net/Documentation/doc_module_vmap.git
+[submodule "doc_module_gtf"]
+	path = doc_module_gtf
+	url = http://vm09.veremes.net/Documentation/doc_module_gtf.git

doc_module_gtf @ 84f0b86d

+Subproject commit 84f0b86d9ab5024dffffcb66e5d484676b2d0c1e

doc_module_pdesi @ 1d96ee8c

+Subproject commit 1d96ee8c9662ee2abba37fae2c0984ba0c3967c8

doc_module_signaletique @ 76dd93e5

+Subproject commit 76dd93e5416ec4c1204762abe3c9a08ee01d7d46

doc_module_vitis @ 058f00a7

+Subproject commit 058f00a7ae7d2642b5b8e0a34679011d29f21297

doc_module_vmap @ c9dc1ddf

+Subproject commit c9dc1ddf744c1c7c19413907f2de898a78ca470c