New osmo-gsmtap-logsend utility

This utility can be used to "pipe" stdin or some file as log lines
via GSMTAP logging.

Change-Id: Ida96e87d84e0c349c5069edc67fec1c3cf19d1ab
diff --git a/.gitignore b/.gitignore
index 167d1e2..d900138 100644
--- a/.gitignore
+++ b/.gitignore
@@ -72,6 +72,7 @@
 utils/osmo-arfcn
 utils/osmo-auc-gen
 utils/osmo-config-merge
+utils/osmo-gsmtap-logsend
 utils/osmo-sim-test
 utils/osmo-aka-verify