Expose current state of the client & make scalar configurable

[Robert-Steiner]

Summary:

• expose current state of the client
• make scalar configurable

[codecov]

Codecov Report

Merging #507 into master will decrease coverage by 0.07%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #507      +/-   ##
==========================================
- Coverage   58.21%   58.13%   -0.08%     
==========================================
  Files          63       63              
  Lines        2996     3000       +4     
==========================================
  Hits         1744     1744              
- Misses       1252     1256       +4     

Impacted Files	Coverage Δ
rust/xaynet-client/src/mobile_client/client.rs	0.00% <0.00%> (ø)
rust/xaynet-client/src/mobile_client/mod.rs	0.00% <0.00%> (ø)
...t-client/src/mobile_client/participant/awaiting.rs	76.47% <ø> (ø)
...xaynet-client/src/mobile_client/participant/mod.rs	0.00% <ø> (ø)
...aynet-client/src/mobile_client/participant/sum2.rs	13.88% <0.00%> (-0.40%)	⬇️
...net-client/src/mobile_client/participant/update.rs	38.46% <0.00%> (-3.21%)	⬇️

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[finiteprods]

One question for clarification, otherwise the AggregationConfig related changes look good.

[Robert-Steiner]

Thanks for reviewing 👍