refactor: Entire code base, thread and log usage

Boils down to:
- Include headers
- Reduce boiler plate with helpers
- Swap out explicit usages with core API layer
  and ensure the right API is configured beforehand

src/main/ddrio-async/Module.mk

@@ -3,6 +3,7 @@ dlls		+= ddrio-async
 ldflags_ddrio-async:= \
 
 libs_ddrio-async	:= \
+	core \
 	util \
 
 src_ddrio-async	:= \