looprpc: add StaticOpenChannel permissions and fix StaticAddressLoopIn

Add macaroon permissions for the new StaticOpenChannel RPC method
and change StaticAddressLoopIn action from read to execute to match
other swap operations.

Author: hieblmi

looprpc/perms.go

@@ -136,6 +136,13 @@ var RequiredPermissions = map[string][]bakery.Op{
 		Entity: "loop",
 		Action: "in",
 	}},
+	"/looprpc.SwapClient/StaticOpenChannel": {{
+		Entity: "deposit",
+		Action: "spend",
+	}, {
+		Entity: "loop",
+		Action: "in",
+	}},
 	"/looprpc.SwapClient/GetLsatTokens": {{
 		Entity: "auth",
 		Action: "read",