Buttons for faster Structure and bomb placements on mobile devices

**Is your feature request related to a problem? Please describe.**
Meanwhile the only option of Building or Bombing while playing on an mobile device is opening the readial menu. This takes approximately 1 second, so it is near to impossible to destroy a stack of more then 4 Sams, place a wall of Defence postes, while getting attacked, or even placing a stack of ports, without accidentally blowing them up, because of an miss click.

**Describe the solution you'd like**
An panel with permanently displayed quick action buttons on mobile devices. Left for right handed and right for left handed players. After selecting an Building or an bomb ther should pop up an option to cancel the placement.
This would be the equivalent for keybinds on the computer.

**Describe alternatives you've considered**
Maybe separate the bomb and structure buttons, so less miss clicking happens.

**Additional context**