sui: add page (#14479)

Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>
Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

pages/common/sui-client-faucet.md

@@ -0,0 +1,16 @@
+# sui client faucet
+
+> Interact with the Sui faucet.
+> More information: <https://docs.sui.io/references/cli/client#request-a-sui-coin-from-faucet>.
+
+- Get a SUI coin from the faucet associated with the active network:
+
+`sui client faucet`
+
+- Get a SUI coin for the address (accepts also an alias):
+
+`sui client faucet --address {{address}}`
+
+- Get a SUI coin from custom faucet:
+
+`sui client faucet --url {{custom-faucet-url}}`