feat: Add shiftKey modifier to keyboard events

[Minilfat]

Motivation

I faced issue that it wasn't possible to do smth like:

cy.realPress('ShiftLeft', {pressDelay: 1000})
cy.get('#some-id').realClick() // <-- the shift key already released 
// then unpress it somehow

Cypress synthetic events come with shiftKey: boolean property in some events where it makes sense.
I think it's useful to have the same option for real events too.

Notes

I decided to write test cases in separate file for 2 main reasons:

• there are few more modifiers that can be added in future and it makes sense to test them in the same modifiers test suite imho
• I couldn't find any events that would react differently when shift key was pressed when event occurred, so had to write simple cases myself

[what-the-diff]

PR Summary

• Introduced Key Modifier Bit Mappings
  A new file named keyToModifierBitMap.ts was introduced. This file makes sure to map specific keys to its respective function.

• Enhancements in 'mouseDown.ts', 'mouseMove.ts', 'realClick.ts', 'realHover.ts', & 'realPress.ts'
  There were modifications made in several files related to actions like clicking, moving the mouse, and pressing keys.

  • Import statement for the newly created keyToModifierBitMap was added in each file.
  • A new optional property named shiftKey was introduced in the interfaces related to the files.
  • An extra property named modifiers has been included in the log object for Cypress, a testing tool, helping to track whether the Shift key was used in these actions.

• Optimization in 'realPress.ts
  The keyToModifierBitMap object was moved from the realPress.ts file to its own file keyToModifierBitMap.ts, enhancing code structure and organization.

[dmtrKovalenko]

Thanks for adding this. Couple comments

• I don’t see that you modified real mouse up
• please revert all the unrelated style changes

[Minilfat]

@dmtrKovalenko thanks for review! I addressed all comments you left, let me know if I need to change something else

[dmtrKovalenko]

🎉 This PR is included in version 1.10.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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