Added fwupd notes to the knowledge base

knowledge base/linux/fwupd.md

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+# fwupd
+
+## TL;DR
+
+```shell
+# display all detected devices
+fwupdmgr get-devices
+
+# download the latest metadata from lvfs
+fwupdmgr refresh
+
+# display available updates, if present
+fwupdmgr get-updates
+
+# download and apply all available updates
+fwupdmgr update
+
+# report the status of an update
+fwupdmgr report-history
+
+# clear the local history of updates
+fwupdmgr clear-history
+```
+
+## Further readings
+
+- [Website]
+- [GitHub] page
+
+[github]: https://github.com/fwupd/fwupd
+[website]: https://fwupd.org/