support 'id' property in model objects

[lace00]

The current version supports '_id' property only, with this change it can handle 'id' as well

[codecov]

Codecov Report

Merging #283 (76e3627) into master (9c2413a) will decrease coverage by 0.04%.
The diff coverage is 90.90%.

@@             Coverage Diff              @@
##             master     #283      +/-   ##
============================================
- Coverage     57.72%   57.67%   -0.05%     
- Complexity      727      729       +2     
============================================
  Files           131      131              
  Lines          5417     5418       +1     
  Branches        454      454              
============================================
- Hits           3127     3125       -2     
- Misses         2092     2094       +2     
- Partials        198      199       +1     

Impacted Files	Coverage Δ
.../main/kotlin/org/litote/kmongo/util/MongoIdUtil.kt	86.66% <90.90%> (-1.97%)	⬇️
...litote/kmongo/coroutine/CoroutineClientSessions.kt	50.00% <0.00%> (-50.00%)	⬇️

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[zigzago]

Thank you for the PR. Could you add a system property like "kmongo.id.enabled" that would activate this feature. (disabled by default). I would prefer to enable this as "feature preview" first.

[lace00]

Thank you for the PR. Could you add a system property like "kmongo.id.enabled" that would activate this feature. (disabled by default). I would prefer to enable this as "feature preview" first.

@zigzago I added the "kmongo.id.enabled" system property.