Enable stale and no-response bots to reduce inactive issues. Add an issue template

.github/ISSUE_TEMPLATE.md

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+This issue tracker is for bugs in the documentation of Moonlight on [this wiki](https://github.com/moonlight-stream/moonlight-docs/wiki).
+
+If you have issues with specific Moonlight clients, you should file your issue in the [appropriate project](https://github.com/moonlight-stream).

.github/no-response.yml

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+# ProBot No Response (https://probot.github.io/apps/no-response/)
+
+daysUntilClose: 7
+responseRequiredLabel: 'need more info'
+closeComment: >
+  This issue has been automatically closed because there was no response to a
+  request for more information from the issue opener. Please leave a comment or
+  open a new issue if you have additional information related to this issue.

.github/stale.yml

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+# ProBot Stale (https://probot.github.io/apps/stale/)
+
+daysUntilStale: 90
+daysUntilClose: 7
+exemptLabels:
+  - accepted
+  - bug
+  - enhancement
+  - meta
+staleLabel: stale
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed if no further activity occurs.
+closeComment: false