Stunner - Use smaller sizes for shapes

This ticket is being created due to some feedback from the team and customers about the process designer (BPMN).

Due to the actual size of shapes, at this point it results easy to use all the available screen area by just having a few elements on the canvas (see attached screenshot).

Acceptance criteria

• The size of icons below the node (in the gray box) are changed to 21px.
• The size of the red corner handle is increased by 30%, rounded up to a whole px amount.
• In the toolbox, the text annotation icon is not truncated at all.
• The default zoom level for all nodes is changed to 70% of previous zoom level. It became the new 100% default size.
• The toolbox icons' tooltip do not scale with zoom. The default size of the text needs to appear similar in size to currently implemented tooltip text size, regardless of the canvas zoom level. We must decouple the tooltips so it does not zoom with the rest of the canvas.
• SVG icons are used instead of PNG for quick menu toolbar.