Add the runtime-manager design doc

[honpey]

Signed-off-by: honpey honpey@gmail.com

Ⅰ. Describe what this PR does

fixes #144

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

[honpey]

/cc @zwzhang0107 @jasonliu747

[codecov-commenter]

Codecov Report

Merging #178 (0e0189d) into main (6ef657a) will increase coverage by 0.03%.
The diff coverage is n/a.

❗ Current head 0e0189d differs from pull request most recent head e6cf167. Consider uploading reports for the commit e6cf167 to get more accurate results

@@            Coverage Diff             @@
##             main     #178      +/-   ##
==========================================
+ Coverage   58.66%   58.69%   +0.03%     
==========================================
  Files          94       94              
  Lines        8615     8615              
==========================================
+ Hits         5054     5057       +3     
+ Misses       3129     3126       -3     
  Partials      432      432              

Flag	Coverage Δ
unittests	58.69% <ø> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...kg/slo-controller/nodemetric/node_event_handler.go	0.00% <0.00%> (-37.84%)	⬇️
...slo-controller/nodemetric/nodemetric_controller.go	48.07% <0.00%> (-12.50%)	⬇️
...controller/noderesource/configmap_event_handler.go	35.71% <0.00%> (+35.71%)	⬆️

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[jasonliu747]

/lgtm
others PTAL
/cc @hormes @saintube @zwzhang0107 @stormgbs @ZYecho

[koordinator-bot]

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In response to this:

/lgtm
others PTAL
/cc @hormes @saintube @zwzhang0107 @stormgbs @ZYecho

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[hormes]

/lgtm
/approve

[jasonliu747]

/lgtm

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes, jasonliu747

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