feat!(e2ei): add handle & team to dpop challenge

[beltram]

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[codecov-commenter]

Codecov Report

Merging #436 (39b8e4d) into develop (d145775) will decrease coverage by 0.02%.
The diff coverage is 86.95%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #436      +/-   ##
===========================================
- Coverage    74.14%   74.12%   -0.02%     
===========================================
  Files           90       90              
  Lines        16301    16315      +14     
===========================================
+ Hits         12086    12094       +8     
- Misses        4215     4221       +6     

Files	Coverage Δ
crypto/src/e2e_identity/identity.rs	88.05% <100.00%> (ø)
crypto/src/e2e_identity/mod.rs	98.76% <100.00%> (+0.03%)	⬆️
crypto/src/e2e_identity/rotate.rs	84.40% <100.00%> (-0.21%)	⬇️
crypto/src/e2e_identity/stash.rs	93.18% <100.00%> (+0.24%)	⬆️
crypto/src/mls/conversation/self_commit.rs	90.07% <100.00%> (ø)
crypto/src/test_utils/central.rs	84.16% <100.00%> (+0.03%)	⬆️
crypto-ffi/src/generic.rs	0.00% <0.00%> (ø)

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[OtaK]

Rebase & squash "wip" commits needed