Initialize Maven project and test functionality

A very simple sketch of what the basic server should be able to do has
been set up with Maven. The main package and class, and important
dependencies were added. The project is based on the Pippo Java framework.

A very simple GET test has been implemented, to store/read/remove data
from a list of users and their visited urls.

This is obviously not secure and not ready for anything that can be
considered pre-alpha state.

.gitignore

@@ -0,0 +1,2 @@
+.idea/
+target/