Switch from Ant build tool to Maven for hfst-optimized-lookup-java [patch]

[hfst-importer]

Switch hfst-optimized-lookup-java build system from Ant to Maven.
Maven significantly more popular nowadays in Java development. It also integrates easily with artifact repositories.

Include a version number in the package.

Reported by: aspa

[hfst-importer]

• assigned_to: Sam Hardwick

Original comment by: eaxelson

[hfst-importer]

The patch removes Ant build file, adds Maven build file and moves source code to a standard Maven hierarchy.

It can be applied e.g. like this:
git apply 0001-switch-from-Ant-build-tool-to-Maven-for-hfst-optimiz.patch

and tested:
cd hfst-optimized-lookup/hfst-optimized-lookup-java
mvn package
jar tf target/hfst-optimized-lookup.jar

Original comment by: aspa