feat: add editor

[Codelax]

Fix #1171
Fix #1006

[codecov-commenter]

Codecov Report

Merging #2878 (93f28af) into master (0611b06) will decrease coverage by 0.21%.
The diff coverage is 55.13%.

@@            Coverage Diff             @@
##           master    #2878      +/-   ##
==========================================
- Coverage   75.07%   74.86%   -0.21%     
==========================================
  Files         151      157       +6     
  Lines       32080    32421     +341     
==========================================
+ Hits        24084    24272     +188     
- Misses       7147     7293     +146     
- Partials      849      856       +7     

Impacted Files	Coverage Δ
internal/editor/doc.go	0.00% <0.00%> (ø)
internal/editor/tempfile.go	0.00% <0.00%> (ø)
...al/namespaces/instance/v1/custom_security_group.go	55.32% <30.50%> (-3.93%)	⬇️
internal/editor/editor.go	37.66% <37.66%> (ø)
internal/editor/marshal.go	40.00% <40.00%> (ø)
internal/editor/reflect.go	95.69% <95.69%> (ø)
internal/editor/request.go	100.00% <100.00%> (ø)
internal/namespaces/instance/v1/custom.go	98.07% <100.00%> (+0.01%)	⬆️

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