Add GRAPH.EXPLAIN and GRAPH.PROFILE commands

[mikhail-vl]

No description provided.

[codecov]

Codecov Report

Merging #200 (a823ae1) into master (d688027) will increase coverage by 0.13%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #200      +/-   ##
==========================================
+ Coverage   93.96%   94.09%   +0.13%     
==========================================
  Files          35       35              
  Lines        1524     1558      +34     
  Branches       74       74              
==========================================
+ Hits         1432     1466      +34     
  Misses         83       83              
  Partials        9        9              

Impacted Files	Coverage Δ
src/redis/command.ts	100.00% <ø> (ø)
pkg/query.go	100.00% <100.00%> (ø)
pkg/redis-graph.go	100.00% <100.00%> (ø)

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[mikhail-vl]

Looks good!