host: use autotools and split shared code to libosmo-simtrace2

Change-Id: I57e77f927ee9e169cc794c5dc6b128a2d590201b
diff --git a/host/contrib/Makefile.am b/host/contrib/Makefile.am
new file mode 100644
index 0000000..4f11962
--- /dev/null
+++ b/host/contrib/Makefile.am
@@ -0,0 +1 @@
+EXTRA_DIST = 99-simtrace2.rules