Show associated keyboard shortcuts where possible

[LevEnko]

It will nice to see associated keyboard shortcuts where possible(when it makes sense and doesn't make UI ugly)
Currently, I have found shortcuts in the top-right hamburger menu, but no visible shortcuts in the tab menu(new tab, close tab, etc.) and page menu(save as, select all, etc.). See examples on the attached Menus.png image.

Menus.png

[Jon]

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