Move the forge-maven-plugin as a module in furnace

<gastaldi> we can release the forge-maven-plugin version to match the Forge version
<lincolnthree1> gastaldi: yea that's what i was thinking
<lincolnthree1> which probably means it should go into the furnace build
<gastaldi> that's ok
<lincolnthree1> and be called furnace-maven-plugin
<gastaldi> hum
<gastaldi> probably yeah
<lincolnthree1> well.. i guess it doesn't have to
<lincolnthree1> but that would make it easier to keep in sync
<gastaldi> sure
<gastaldi> that's ok I guess
<lincolnthree1> it depends on many of the furnace APIs I think
<gastaldi> furnace-manager-spi mostly
<lincolnthree1> and the furnace manager
<lincolnthree1> yea
<gastaldi> I think we can do this