Add basic models

Signed-off-by: Lee Smet <lee.smet@hotmail.com>

src/models.rs

@@ -0,0 +1,15 @@
+mod actor;
+mod context;
+mod flow;
+mod job;
+mod message;
+mod runner;
+mod script_type;
+
+pub use actor::Actor;
+pub use context::Context;
+pub use flow::Flow;
+pub use job::Job;
+pub use message::Message;
+pub use runner::Runner;
+pub use script_type::ScriptType;