Implement issue analytics and fixed Label Counts analytics

[vaishnavi-gupta18]

Description

• Added issue analytics : Added three doughnut charts displaying issue proportions according to their priority, category and status
• Fixed Label Counts analytics

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

analytics.mp4

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[amlannandy]

Looks good to me. Nice work.
Just a small improvement we can make. Is it possible to make it so that when we hover/click on a particular section in the Pie chart, we also get to see the actual number of items in that section?
Does the package we're currently using allow that?
This is completely optional. If it's not possible we can merge as it is.

[vaishnavi-gupta18]

@amlannandy This functionality is already present. I forgot to show it in the demonstration video.

analytics.hover.mp4

[amlannandy]

@amlannandy This functionality is already present. I forgot to show it in the demonstration video.

analytics.hover.mp4

Ah that's great then.