Add Redis CPU Usage panel

[mikhail-vl]

Resolves #94.

[codecov]

Codecov Report

Merging #96 (2048151) into master (6f17eac) will decrease coverage by 0.18%.
The diff coverage is 96.09%.

@@            Coverage Diff             @@
##           master      #96      +/-   ##
==========================================
- Coverage   97.37%   97.19%   -0.19%     
==========================================
  Files          47       54       +7     
  Lines         762      890     +128     
  Branches      157      177      +20     
==========================================
+ Hits          742      865     +123     
- Misses         10       13       +3     
- Partials       10       12       +2     

Impacted Files	Coverage Δ
...ts/redis-cpu-panel-graph/redis-cpu-panel-graph.tsx	94.28% <94.28%> (ø)
...nel/components/redis-cpu-panel/redis-cpu-panel.tsx	96.15% <96.15%> (ø)
src/redis-cpu-panel/components/index.ts	100.00% <100.00%> (ø)
...pu-panel/components/redis-cpu-panel-graph/index.ts	100.00% <100.00%> (ø)
...edis-cpu-panel/components/redis-cpu-panel/index.ts	100.00% <100.00%> (ø)
src/redis-cpu-panel/constants.ts	100.00% <100.00%> (ø)
src/redis-cpu-panel/module.ts	100.00% <100.00%> (ø)

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