FF8: Fix texture animation only partially animated

[myst6re]

Summary

• When the external texture is upscaled (which is the common case), texture copy is not scaled up to the full size of the copy
• Adding some rules in the .reg file to allow alt+tab and windows key press (FF8 2000 only). It will ask Windows to disable all compatibility patches, which are not needed anyway with FFNx

ACKs

• I have updated the Changelog.md file
• I did test my code on FF7
• I did test my code on FF8

[julianxhokaxhiu]

Thank you!