feat: add IN | NIN predicate for custom attribute types

[igdianov]

This PR add support for IN, NIN predicates in criteria expressions for custom attributes, i.e.

query {
  TaskVariables(where: { 
    value: {IN: [null, true, "data", 12345, 1.2345]} 
  }) {
    select {
      name
      value
    }
  }
}

query {
  TaskVariables(where: { 
    value: {NIN: true} 
  }) {
    select {
      name
      value
    }
  }
}

[codecov]

Codecov Report

Merging #136 into master will increase coverage by 0.17%.
The diff coverage is 77.77%.

@@             Coverage Diff              @@
##             master     #136      +/-   ##
============================================
+ Coverage     68.49%   68.66%   +0.17%     
- Complexity      407      415       +8     
============================================
  Files            33       33              
  Lines          2079     2097      +18     
  Branches        311      317       +6     
============================================
+ Hits           1424     1440      +16     
- Misses          529      531       +2     
  Partials        126      126

Impacted Files	Coverage Δ	Complexity Δ
...hql/jpa/query/schema/impl/JpaPredicateBuilder.java	50.63% <77.77%> (+3.14%)	52 <4> (+8)	⬆️

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