Resolve "Allow plugins to provide own JVM_ARGS and examples"

JVM options

It is possible for plugins to require additional JVM parameters when calling EvoAl. Therefore, a file named src/main/options/JVM_OPTS is needed. It contains a single variable called JVM_OPTS that contains all necessary parameters as an array:

JVM_OPTS=( --add-exports io.jenetics.base/io.jenetics.internal.math=de.evoal.core.ea \
           --add-exports io.jenetics.base/io.jenetics.internal.collection=de.evoal.core.ea \
           --add-exports io.jenetics.base/io.jenetics.internal.util=de.evoal.core.ea )

The file needs to be copied to the final plugin directory. The create-release.sh from the template repository does this automatically for you. The paths.env loaded by all EvoAl scripts will then read the JVM_OPTS and append the value to the command line build for calling EvoAl.

Scripts

The location of the scripts changed from scripts to src/main/scripts

Examples

The examples are now in src/main/examples, allowing every plugin to provide examples. This is only to keep track of which examples belong to which features.

Closes #57 (closed)