yang-cli: Allow loading module by name

Linking with filesystem is back!

Change-Id: I355f0991848df1dd72aceff5a57559ddc20a6082
diff --git a/src/yang_access.hpp b/src/yang_access.hpp
index acbcc08..aaabd4b 100644
--- a/src/yang_access.hpp
+++ b/src/yang_access.hpp
@@ -37,6 +37,7 @@
     void enableFeature(const std::string& module, const std::string& feature);
     std::string dump(const DataFormat format) const override;
 
+    void loadModule(const std::string& name);
     void addSchemaFile(const std::string& path);
     void addSchemaDir(const std::string& path);
     void addDataFile(const std::string& path);