Draft: BUG:349152 | Create transform mask for clone and file layers when using transform tool

Automatically adds and selects transform mask for clone and file layer when user attempts to use the tool on them.

The mask will be created only when user clicks the canvas, so no accidental masks will be creating by just selecting the tool while mentioned layers are active. Krita will also inform them with msg that those layers can't be transformed directly and that new mask for them was added. User has to click again after first click, which is not ideal but not sure how to go around that for now. Although, it doesn't create big problem for the user it's just less smooth.

Makes !510 obsolete.

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