slurm*: add pages (#11133)

Author:    xuzhangheng <48378279+xuzhangheng@users.noreply.github.com>
Co-authored-by: Magrid <magrid0@proton.me>
Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/linux/slurmrestd.md

@@ -0,0 +1,28 @@
+# slurmrestd
+
+> Interface to Slurm via REST API. It can be used in two modes: *Inetd Mode* & *Listen Mode*.
+> More information: <https://slurm.schedmd.com/slurmrestd.html>.
+
+- Change the group ID (and drop supplemental groups) before processing client requests:
+
+`slurmrestd --g {{group_id}} {{[host]:port | unix:/path/to/socket}}`
+
+- Comma-delimited list of authentication plugins to load:
+
+`slurmrestd -a {{authentication_plugins}} {{[host]:port | unix:/path/to/socket}}`
+
+- Read Slurm configuration from the specified file:
+
+`slurmrestd -f {{path/to/file}}`
+
+- Change user ID before processing client request:
+
+`slurmrestd -u {{user_id}}`
+
+- Display help:
+
+`slurmrestd -h`
+
+- Display version:
+
+`slurmrestd -V`