Unified achievements across all Bedrock platforms

Currently, Minecraft Bedrock achievements are separated by platform. Meaning players have to unlock the exact same achievements multiple times if they play on iOS, Xbox, PC, or Nintendo Switch. Since we use a single Microsoft account, achievements should be unified and synchronized universally. Unlocking an achievement on one Bedrock device should instantly unlock it on all other connected devices under the same account. This would create a true cross-progression experience and make achievement hunting much more rewarding.

note: java and other legacy versions were not included