[Proposal] add proposal about resize asts pvc

[ABNER-1]

Ⅰ. Describe what this PR does

add proposal about resize asts pvc

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.85%. Comparing base (0d0031a) to head (5b9192e).
Report is 76 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1651      +/-   ##
==========================================
+ Coverage   47.91%   48.85%   +0.93%     
==========================================
  Files         162      188      +26     
  Lines       23491    19273    -4218     
==========================================
- Hits        11256     9415    -1841     
+ Misses      11014     8628    -2386     
- Partials     1221     1230       +9     

Flag	Coverage Δ
unittests	48.85% <ø> (+0.93%)	⬆️

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