Add support for explain request

[prafsoni]

67

[codecov[bot]]

Codecov Report

Merging #75 into master will increase coverage by 1.54%. The diff coverage is 98.46%.

@@            Coverage Diff             @@
##           master      #75      +/-   ##
==========================================
+ Coverage   46.67%   48.22%   +1.54%     
==========================================
  Files          54       55       +1     
  Lines        6909     7104     +195     
==========================================
+ Hits         3225     3426     +201     
+ Misses       3684     3678       -6

Impacted Files	Coverage Δ
Sources/ElasticSwift/Responses/Response.swift	94.19% <ø> (+4.51%)	:arrow_up:
Sources/ElasticSwift/ElasticSwift.swift	59.25% <50%> (-0.24%)	:arrow_down:
Sources/ElasticSwift/Requests/ExplainRequest.swift	99.47% <99.47%> (ø)
Sources/ElasticSwift/Utils/Utils.swift	66.66% <0%> (+11.11%)	:arrow_up:

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[sonarcloud[bot]]

SonarCloud Quality Gate failed.

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
17 Code Smells

No Coverage information
10.6% Duplication