feat: add a install script

[0xff-dev]

What type of PR is this?

/kind feature

What this PR does / why we need it

feat: add a install script

Which issue(s) this PR fixes

Fixes #

Special notes for your reviewer

root@ecs-4fc018ff-1ded-4c65-92dc-67dc1911226c:~/workspace/core/hack$ ./install.sh 
nodename: kubebb-core-worker, nodeip: 172.18.0.2

1. add repo as kubebb
"kubebb12" already exists with the same configuration, skipping
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "kubebb12" chart repository
...Successfully got an update from the "kubebb123" chart repository
...Successfully got an update from the "kubebb" chart repository
Update Complete. ⎈Happy Helming!⎈

2. create namespace u4a-system, kubebb-system
namespace/u4a-system unchanged
namespace/kubebb-system unchanged

3. install kubebb-core in namesapce kubebb-system with name kubebb-core
kubebb-core-component installed successfully

4. install the cluster-component in namespace u4a-system with name cluster-component
4.1 replace <replaced-ingress-node-name> in values.yaml
4.2 intall cluster-component
cluster-component installed successfully

5. install the u4a-component in namespace u4a-system with name u4a-component
5.1 replace <replaced-ingress-nginx-ip> in values.yaml
5.2 install u4a-compnent
u4a-component installed successfully

Done

[Abirdcfly]

also cc @bincherry

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 26.56%. Comparing base (e64f6ac) to head (0715d92).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #400   +/-   ##
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  Coverage   26.56%   26.56%           
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  Files          37       37           
  Lines        4638     4638           
=======================================
  Hits         1232     1232           
  Misses       3303     3303           
  Partials      103      103           

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