Added PCF85063ATL

Hello,

I've added the PCF85063ATL I2C RTC.

• Datasheet: https://www.nxp.com/docs/en/data-sheet/PCF85063A.pdf
• Associated MR: kicad-footprints!2799 (merged)

• Provide a URL to a datasheet for the symbol(s) you are contributing
• An example screenshot image is very helpful
• Ensure that the associated footprints match the official footprint library
  • A new fitting footprint must be submitted if the library does not yet contain one.
• If there are matching footprint PRs, provide link(s) as appropriate
• Check the output of the automated check scripts - fix any errors as required
• Give a reason behind any intentional library convention rule violation.