Modernize table appearance

[ReCodee]

Fixes #82 Legacy bigtable design has been replaced with modern jenkins-table as per the official documentation i.e https://weekly.ci.jenkins.io/design-library/Table/

Below is the attached screenshot of how the table looks after making the changes:

Submitter checklist

• [x] Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• [x] Ensure that the pull request title represents the desired changelog entry
• [x] Please describe what you did
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• [x] Ensure you have provided tests - that demonstrates feature works or fixes the issue

[NotMyFault]

Hey,

thanks for the PR. For reference, please take a look at the design library how a proper jenkins-table layout looks like, syntax wise, ignoring the bottom margin part.

[ReCodee]

Hi @NotMyFault , Thanks for the guidance. I've made some changes, Please take a look.

[olivergondza]

Thanks, it looks great!

[timja]

Colours are no longer shown as the jenkins-table selector is more specific:

I'm not a big fan of all the colours but another way should be added to show a status at least.

e.g see this old screenshot: https://github.com/jenkinsci/dark-theme-plugin/issues/108

now it's: