feat(cdk/menu): not to close on outside click, add output event for outside click of menu, add output event for `contextmenu`

[naaajii]

feat(cdk/menu): not to close on outside click

this commit adds new input in menu trigger which allows users to disable closing menu on outside clicks

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feat(cdk/menu): add output event for outside click of menu

this commit exposes an output which emits whenever the user clicks outside open menu

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feat(cdk/menu): add output event for contextmenu

this commit exposes an output that emits whenever user triggers contextmenu event which contains clientX and clientY position respectively