optimize cluster runtime

[kakaZhou719]

Describe what this PR does / why we need it

Does this pull request fix one issue?

Describe how you did it

1. optimize cluster runtime : move out uninstall and scale process
2. load registry data from cluster image if its type is app-installer.

Describe how to verify it

Special notes for reviews

[codecov-commenter]

Codecov Report

Base: 20.55% // Head: 20.50% // Decreases project coverage by -0.04% ⚠️

Coverage data is based on head (f05a4a0) compared to base (9d4f590).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1769      +/-   ##
==========================================
- Coverage   20.55%   20.50%   -0.05%     
==========================================
  Files          69       71       +2     
  Lines        6525     6540      +15     
==========================================
  Hits         1341     1341              
- Misses       5003     5018      +15     
  Partials      181      181              

Impacted Files	Coverage Δ
pkg/cluster-runtime/installer.go	0.00% <0.00%> (ø)
pkg/cluster-runtime/scale.go	0.00% <0.00%> (ø)
pkg/cluster-runtime/uninstall.go	0.00% <0.00%> (ø)
pkg/cluster-runtime/utils.go	0.00% <0.00%> (ø)

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[starnop]

LGTM