Move 3GPP-specific bibdata under ext

[ronaldtse]

We have data like:

doctype: TR
editorialgroup:
- name: RP
  type: prime
- name: R1, R2, R3, R4
  type: other
radiotechnology: 3G
release:
  version2g: '7'
  version3g: '7'
  defunct: true
  wpm_code_2g: GSM_Release_7
  wpm_code_3g: 3G_Rel-7
  freeze_meeting: SP-35
  freeze_stage1_meeting: SP-29
  freeze_stage2_meeting: SP-33
  freeze_stage3_meeting: SP-35
  close_meeting: SP-65
  project_start: '2003-12-01'
  project_end: '2008-03-13'

But these are 3GPP specific data. They should be stored under a special key and not pollute the top level namespace.

[andrew2net]

@strogonoff are you ready for this change?

[andrew2net]

@ronaldtse each flavor-specific relaton-* has specific data. In the RelatonXML we store the data under ext element. I think we should modify RelatonYAML for all relaton-*, not only 3GPP. Do you agree?

[ronaldtse]

I agree that we should store under ext element in Relaton YAML too. Thanks!

[andrew2net]

fixed in relaton v1.20.0