docs: add CLI usage and integrate generation in release

www/docs/cli/filebrowser-users-find.md

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+# filebrowser users find
+
+Find a user by username or id
+
+## Synopsis
+
+Find a user by username or id. If no flag is set, all users will be printed.
+
+```
+filebrowser users find <id|username> [flags]
+```
+
+## Options
+
+```
+  -h, --help   help for find
+```
+
+## Options inherited from parent commands
+
+```
+  -c, --config string     config file path
+  -d, --database string   database path (default "./filebrowser.db")
+```
+
+## See Also
+
+* [filebrowser users](filebrowser-users.md)	 - Users management utility
+