Add uuid to identify connection timings

[chillosu]

For our use of HikariCP we have determined that the average duration of time between connection creation attempt and connection established can be an indicator for determining health between the application layer and the database.

AFAIK, there is no way current way to correlate an attempt at establishing a connection and the existing logging "Added connection", this is an attempt to change that.

[codecov]

Codecov Report

Merging #1992 (65d3f3f) into dev (3a90fb9) will increase coverage by 0.08%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                dev    #1992      +/-   ##
============================================
+ Coverage     70.37%   70.46%   +0.08%     
+ Complexity      572      570       -2     
============================================
  Files            26       26              
  Lines          2164     2167       +3     
  Branches        311      311              
============================================
+ Hits           1523     1527       +4     
+ Misses          492      487       -5     
- Partials        149      153       +4     

Impacted Files	Coverage Δ
src/main/java/com/zaxxer/hikari/pool/PoolBase.java	72.92% <100.00%> (+2.48%)	⬆️
...ain/java/com/zaxxer/hikari/util/ConcurrentBag.java	71.27% <0.00%> (-5.32%)	⬇️

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[akashchouhan16]

@chillosu great addon for logs ✅