Added gitignore templates

ignore/Global/Virtuoso.gitignore

@@ -0,0 +1,18 @@
+# Gitignore for Cadence Virtuoso
+################################################################
+
+# Log files
+*.log
+panic*.log.*
+
+# OpenAccess database lock files
+*.cdslck*
+
+# Run directories for layout vs. schematic and design rule check
+lvsRunDir/*
+drcRunDir/*
+
+# Abstract generation tool
+abstract.log*
+abstract.record*
+