feat(ObjectPage): Introduce Breadcrumbs and key infos

[clemai]

• Add Breadcrumbs above object title, if given.
• Add key Info area.
• Hide header content area, if renderHeaderContent is not given.
• Fix lost title/subtitle issue, when switching from collapsed header to expanded header via expand button.

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[codecov-io]

Codecov Report

Merging #246 into master will increase coverage by 0.05%.
The diff coverage is 56.25%.

@@            Coverage Diff             @@
##           master     #246      +/-   ##
==========================================
+ Coverage   73.46%   73.52%   +0.05%     
==========================================
  Files         160      160              
  Lines        3494     3498       +4     
  Branches      603      607       +4     
==========================================
+ Hits         2567     2572       +5     
- Misses        721      723       +2     
+ Partials      206      203       -3

Impacted Files	Coverage Δ
packages/main/src/components/ObjectPage/index.tsx	44.66% <56.25%> (+1.29%)	⬆️

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[vbersch]

• render functions for breadcrumbs and keyinfos
• first header content element has to be displayed under title/subtitle
• collapse/expand twice -> duplicate display of header(title, subtitle + keyinfos)