lsyncd: add page (#10789)

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

pages/common/lsyncd.md

@@ -0,0 +1,13 @@
+# lsyncd
+
+> Watch files and directories and run `rsync` when they change.
+> It is often used to keep two directories on separate systems in sync, ensuring that changes made in one directory are immediately mirrored to the other.
+> More information: <https://github.com/lsyncd/lsyncd>.
+
+- Watch the source for changes and run `rsync` to synchronize files to the destination on every change:
+
+`lsyncd -rsync {{path/to/source}} {{host::share_name}}`
+
+- Use SSH instead of `rsyncd` shares:
+
+`lsyncd -rsyncssh {{path/to/source}} {{host}} {{path/to/destination}}`