add new command karmadactl create

[hulizhe]

What type of PR is this?
/kind feature

What this PR does / why we need it:
add new command karmadactl create

$ karmadactl create ns test
namespace/test created
$ karmadactl get ns
NAME                 CLUSTER   STATUS   AGE     ADOPTION
... ...
test                 Karmada   Active   4s      N/A
$ karmadactl create -f sample-pod.yaml 
pod/nginx created
$ karmadactl get pods 
NAME    CLUSTER   READY   STATUS    RESTARTS   AGE
nginx   Karmada   0/1     Running   0          4s

Which issue(s) this PR fixes:
Parts of #5249

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

`karmadactl`: add new command `create` to create a resource from a file or from stdin in Karmada control plane.

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 29.66%. Comparing base (c757122) to head (a6aa08e).

Files	Patch %	Lines
pkg/karmadactl/create/create.go	0.00%	5 Missing ⚠️
pkg/karmadactl/karmadactl.go	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5399      +/-   ##
==========================================
- Coverage   29.66%   29.66%   -0.01%     
==========================================
  Files         632      633       +1     
  Lines       43914    43920       +6     
==========================================
- Hits        13028    13027       -1     
- Misses      29943    29951       +8     
+ Partials      943      942       -1     

Flag	Coverage Δ
unittests	29.66% <0.00%> (-0.01%)	⬇️

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[zhzhuang-zju]

/retest

[RainbowMango]

/assign

[RainbowMango]

/lgtm
/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RainbowMango

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