slocate: add page (#17237)

Co-authored-by: Wiktor Perskawiec <wiktor@perskawiec.cc>
Co-authored-by: Dylan <145150333+dmmqz@users.noreply.github.com>

pages/common/slocate.md

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+# slocate
+
+> Secure variant of GNU Locate.
+> See also: `locate`.
+> More information: <https://manned.org/slocate>.
+
+- Enable quiet mode to suppress error messages:
+
+`slocate -q`
+
+- Limit the number of results shown:
+
+`slocate -n {{number}}`
+
+- Build an `slocate` database starting at path `/`:
+
+`slocate -u`
+
+- Build an `slocate` database starting at a given directory:
+
+`slocate -U {{path/to/directory}}`
+
+- Update an `slocate` database using the default `/etc/updatedb.conf` configuration:
+
+`slocate -c`
+
+- Set the security level of `slocate`, with `0` being disabled, and `1` being secure:
+
+`slocate -l {{0|1}}`
+
+- Specify the database that `slocate` should search in:
+
+`slocate {{[-d|--database]}} {{path/to/directory}}`
+
+- Search the `slocate` database using a specific `regex` string:
+
+`slocate {{[-r|--regexp]}} {{regex}}`