Add module info via moditect

[bowbahdoe]

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This adds a module info to the final jar using moditect.

This one file will be put under META-INF/versions/9 and so won't be picked up by android. Everything else will continue to be compiled at source/release 7 and should avoid the downsides encountered in #289 .

This is needed for using this library in a jlinked image.