Support CLUSTER commands

[Avital-Fine]

Description

Support CLUSTER [...] commands

closes #1933, closes #1932, closes #1931, closes #1933, closes #1930, closes #1929, closes #1928, closes #1926, closes #1925, closes #1924, closes #1922, closes #1921, closes #1920, closes #1922, closes #1919

---

Checklist

• Does npm test pass with this change (including linting)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

[codecov-commenter]

Codecov Report

Merging #2015 (a82770f) into master (515adf1) will increase coverage by 0.07%.
The diff coverage is 100.00%.

❗ Current head a82770f differs from pull request most recent head 4350c57. Consider uploading reports for the commit 4350c57 to get more accurate results

@@            Coverage Diff             @@
##           master    #2015      +/-   ##
==========================================
+ Coverage   94.58%   94.65%   +0.07%     
==========================================
  Files         372      384      +12     
  Lines        3451     3499      +48     
  Branches      420      421       +1     
==========================================
+ Hits         3264     3312      +48     
  Misses        101      101              
  Partials       86       86              

Impacted Files	Coverage Δ
packages/client/lib/commands/CLUSTER_FLUSHSLOTS.ts	100.00% <ø> (ø)
...kages/client/lib/commands/CLUSTER_GETKEYSINSLOT.ts	100.00% <ø> (ø)
packages/client/lib/commands/CLUSTER_MEET.ts	100.00% <ø> (ø)
packages/client/lib/commands/CLUSTER_SLOTS.ts	100.00% <ø> (ø)
packages/client/lib/client/commands.ts	100.00% <100.00%> (ø)
packages/client/lib/commands/CLUSTER_ADDSLOTS.ts	100.00% <100.00%> (ø)
packages/client/lib/commands/CLUSTER_BUMPEPOCH.ts	100.00% <100.00%> (ø)
...ient/lib/commands/CLUSTER_COUNT-FAILURE-REPORTS.ts	100.00% <100.00%> (ø)
...ges/client/lib/commands/CLUSTER_COUNTKEYSINSLOT.ts	100.00% <100.00%> (ø)
packages/client/lib/commands/CLUSTER_DELSLOTS.ts	100.00% <100.00%> (ø)
... and 11 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 515adf1...4350c57. Read the comment docs.