Add probots configuration.

.github/lock.yml

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+# 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: 30
+# Comment to post before locking. Set to `false` to disable
+lockComment: false
+# Issues or pull requests with these labels will not be locked
+# exemptLabels:
+#   - no-locking
+# Limit to only `issues` or `pulls`
+# only: issues
+# Add a label when locking. Set to `false` to disable
+lockLabel: outdated

.github/no-response.yml

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+# Configuration for probot-no-response - https://github.com/probot/no-response
+
+# Number of days of inactivity before an Issue is closed for lack of response
+daysUntilClose: 14
+# Label requiring a response
+responseRequiredLabel: needs response
+# Comment to post when closing an Issue for lack of response. Set to `false` to disable
+closeComment: >
+  This issue has been automatically closed because there has been no response
+  to our request for more information from the original author. With only the
+  information that is currently in the issue, we don't have enough information
+  to take action. Please reach out if you have or find the answers we need so
+  that we can investigate further.

.github/support.yml

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+# Configuration for support-requests - https://github.com/dessant/support-requests
+
+# Label used to mark issues as support requests
+supportLabel: support-request
+# Comment to post on issues marked as support requests. Add a link
+# to a support page, or set to `false` to disable
+supportComment: >
+  We use the issue tracker exclusively for bug reports.
+  However, this issue appears to be a support request. Please use our
+  [Discourse](https://discourse.brew.sh) or
+  [IRC channel](irc://irc.freenode.net/#machomebrew) to get help with
+  the project.
+# Whether to close issues marked as support requests
+close: true
+# Whether to lock issues marked as support requests
+lock: true