fix#366 Fixing the alignment of button group in appbar and background color of buttons

[Abhi0049k]

PR Fixes:

• 1 Button Group alignment in Appbar
• 2 Background Color of all buttons in the appbar

Resolves #366

Screenshot

Checklist before requesting a review

• [X] I have performed a self-review of my code
• [X] I assure there is no similar/duplicate pull request regarding same issue

[Abhi0049k]

hey @hkirat will it be okay If I work on cleaning the codebase meaning changing this

into something like this

with this, it will be easier for newcomers to quickly understand the codebase. like there are two appbar component

[devsargam]

Too old + has conflicts. Closing for now feel free to open and discuss