AsyncAndSyncRule

[kentr0w]

What's done:

Implemented rule, added tests and documentation

Actions checklist

• Implemented Rule, added Warnings
• Added tests on checks
• Updated diktat-analysis.yml
• Updated available-rules.md
• closes Avoid using runBlocking in asynchronous code #691

[codecov]

Codecov Report

Merging #707 (fcc5ad2) into master (526bc52) will increase coverage by 0.01%.
The diff coverage is 84.61%.

@@             Coverage Diff              @@
##             master     #707      +/-   ##
============================================
+ Coverage     80.08%   80.09%   +0.01%     
- Complexity     1871     1887      +16     
============================================
  Files            88       89       +1     
  Lines          4870     4883      +13     
  Branches       1565     1566       +1     
============================================
+ Hits           3900     3911      +11     
  Misses          238      238              
- Partials        732      734       +2     

Flag	Coverage Δ	Complexity Δ
unittests	80.09% <84.61%> (+0.01%)	0.00 <16.00> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ	Complexity Δ
...at-rules/src/main/kotlin/generated/WarningNames.kt	0.00% <ø> (ø)	0.00 <0.00> (ø)
.../org/cqfn/diktat/ruleset/rules/AsyncAndSyncRule.kt	81.81% <81.81%> (ø)	16.00 <16.00> (?)
...tlin/org/cqfn/diktat/ruleset/constants/Warnings.kt	97.70% <100.00%> (+0.01%)	11.00 <0.00> (ø)
...cqfn/diktat/ruleset/rules/DiktatRuleSetProvider.kt	93.20% <100.00%> (+0.06%)	11.00 <0.00> (ø)

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[orchestr7]

@petertrr @kentr0w add it to the code style