Adding "continue reading" button on the dock

[Mhuzaifakhalid]

Describe your suggested feature

There's this "continue " button in the history section that opens the last read chapter where we left it. There should also be an option to add that in the dock (the button strip), like it is in the tablet mode. There should be an option to add or remove it or relocate it on the dock as we want in the settings. If you ask me how I want it to be, it should be a bit bigger in the same blue colour on the dock, making it distinguising from the other options (again, as in the tablet/horizontal mode)

Also another thing is that it should also work when offline (because the current one disappears when offline) as the last read could be a downloaded chapter.

Acknowledgements

• [X] This is not a duplicate of an existing issue. Please look through the list of open issues before creating a new one.

[Mhuzaifakhalid]

If that's not possible, atleast give an option to add the continue button on the favourites page

[mbera99]

I also ask for a multi tab continue reading button and not only for history and favourites. It should add all the tabs or atleast on device tab too.