Add lock bot 🔒🤖

* Add \.github to .Rbuildignore

Author: batpigandme

.Rbuildignore

@@ -19,3 +19,4 @@ visual_test
 ^README-.*\.png$
 ^logo\.png$
 ^appveyor\.yml$
+^\.github$

.github/lock.yml

@@ -0,0 +1,28 @@
+# Configuration for lock-threads - https://github.com/dessant/lock-threads
+
+# Number of days of inactivity before a closed issue or pull request is locked
+daysUntilLock: 365
+
+# Issues and pull requests with these labels will not be locked. Set to `[]` to disable
+exemptLabels: []
+
+# Label to add before locking, such as `outdated`. Set to `false` to disable
+lockLabel: false
+
+# Comment to post before locking. Set to `false` to disable
+lockComment: >
+  This thread has been automatically locked as there has not been
+  any recent activity since it was closed. Please open a new issue for
+  related bugs.
+
+# Limit to only `issues` or `pulls`
+# only: issues
+
+# Optionally, specify configuration settings just for `issues` or `pulls`
+# issues:
+#   exemptLabels:
+#     - help-wanted
+#   lockLabel: outdated
+
+# pulls:
+#   daysUntilLock: 30