Dark mode support for Admin Portal

[niwsa]

Describe the feature

Add support for dark mode. Come up with a suitable dark mode theme that complements our default theme. Use theme based on the OS setting ( prefers-color-scheme media query ) and allow the user to switch between light and dark mode seamlessly.

Reference: https://web.dev/prefers-color-scheme/

[krishankumar01]

@niwsa I would like to work on this issue.

[NathanTarbert]

Hi @kkumar-gcc, thanks for offering to enhance Jackson's Admin Portal with dark mode, we really appreciate it.

[krishankumar01]

@devkiran jackson is eating up a lot of memory

Before running jackson:

After running jackson ( upto 7.7gb/8.0gb):

[NathanTarbert]

Hi @kkumar-gcc, just curious if you are still working on this issue? Let me know how it's going, thanks!

[krishankumar01]

Sorry @NathanTarbert ,I am having above issue which is not solved.

[NathanTarbert]

Hi @kkumar-gcc, ok are you on Windows or Mac?

[krishankumar01]

@NathanTarbert I am using Ubuntu 22.04.

[jatinmark]

I want to work on this issue can you assign it to me.