Rename "com.fasterxml.jackson" -> "tools.jackson"

[cowtowncoder]

As the main task for JSTEP-1 (https://github.com/FasterXML/jackson-future-ideas/wiki/JSTEP-1) we need to:

Change Maven package group id from "com.fasterxml.jackson.module" to "tools.jackson.module"
Change Java Package name from "com.fasterxml.jackson.module" to "tools.jackson.module"

as well as all secondary changes for OSGi and Java module system.