Extract killbill-platform

[pierre]

• New lifecycle module (extract beatrix)
• Move osgi and osgi-bundles
• Only dependencies: killbill-api, killbill-plugin-api

[pierre]

Notes about jaxrs and server:

• It should be extracted on its own (for independent versioning)
• Resources should be exploded to minimize dependencies (today, AccountResource injects SubscriptionApi, InvoiceUserApi, InvoicePaymentApi, PaymentApi, DirectPaymentApi, OverdueUserApi, etc.) - we probably need a multi-modules jaxrs project (same modules as killbill)
• server currently hardcodes all Guice modules, we will probably need to create another multi-modules project (with for example subscription and payment submodules) which create Kill Bill and Kill Pay artifacts - these modules will contain some code (at least the equivalent of KillbillServerModule for each)