complete CRML Github documentation with EMBrACE results

[lenaRB]

@adrpo, @lenaRB : Could be useful to add on Github the EMBrACE public reports on the CRML methodology (D2.1) and CRML tooling architecture (D2.2). In particular, to keep trace of @vincemolnar 'works on articulation of CRML with SysML V2.

[lenaRB]

• add EMBrACE results
• move the specification to documentation/specification
• move tutorials and publication to documentation/resources and create a readme with the citations