docs: n34 book

Signed-off-by: Awiteb <a@4rs.nl>

docs/sets/show.md

@@ -0,0 +1,17 @@
+# Show a Set
+
+> `n34 sets show` command
+
+**Usage:**
+```
+Show a single set or all the stored sets
+
+Usage: n34 sets show [NAME]
+
+Arguments:
+  [NAME]  Name of the set to display. If not provided, lists all available sets
+```
+
+Prints all set names to standard output, each followed by its associated repos
+and relays. To view the details for a specific set, provide its name as an
+argument.