Lab moderna: add p3

Change-Id: I33feba7f04f13e91bfddacfa04a3f5b2e4e1952a
diff --git a/quad12/labmoderna/p3/output/.gitignore b/quad12/labmoderna/p3/output/.gitignore
new file mode 100644
index 0000000..b51a70d
--- /dev/null
+++ b/quad12/labmoderna/p3/output/.gitignore
@@ -0,0 +1,2 @@
+*.pdf
+*.tex