Add support for building ICU4C UWP with ARM64, add to CI builds

Description

The UWP builds with Visual Studio currently build with ARM32, but there is no way to build them for ARM64.

We can add support for building ARM64, and at the same time we should add the ARM32 and ARM64 builds to the CI builds.

Status

Assignee

Jeff Genovy

Reporter

Jeff Genovy

Labels

Reviewer

None

Time Needed

Days

Start date

None

Components

Fix versions

Priority

medium