Replace delegate based server impl with call handler

[marcoferrer]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 89.21569% with 33 lines in your changes missing coverage. Please review.
✅ Project coverage is 65.29%. Comparing base (aad7b71) to head (b232741).
⚠️ Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
...oplus/coroutines/client/ClientResponseObservers.kt	80.55%	11 Missing and 10 partials ⚠️
.../krotoplus/coroutines/server/ServerCallHandlers.kt	95.08%	3 Missing and 3 partials ⚠️
...s/coroutines/server/DeferredCancellationHandler.kt	78.57%	1 Missing and 2 partials ⚠️
...oferrer/krotoplus/coroutines/client/ClientCalls.kt	95.12%	0 Missing and 2 partials ⚠️
...rer/krotoplus/coroutines/call/CallReadyObserver.kt	93.33%	1 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (aad7b71) and HEAD (b232741). Click for more details.

HEAD has 99 uploads less than BASE

Flag	BASE (aad7b71)	HEAD (b232741)
	100	1

Additional details and impacted files

@@              Coverage Diff              @@
##             master     #102       +/-   ##
=============================================
- Coverage     88.07%   65.29%   -22.78%     
- Complexity       21       22        +1     
=============================================
  Files            16       19        +3     
  Lines           369      608      +239     
  Branches         50       75       +25     
=============================================
+ Hits            325      397       +72     
- Misses           25      183      +158     
- Partials         19       28        +9     

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