Add support for building TikToken WoA

[lowkeyrossi]

• The adoption of Windows on ARM (WoA) devices is increasing, but many Python wheels remain unavailable for this platform.
• Currently, tiktoken fails to install on WoA due to the lack of a Rust toolchain.
• With GitHub now offering free WoA runners, we have the opportunity to add WoA support for tiktoken.
• This PR addresses the gap by enabling the building of tiktoken wheels for WoA, making it easier for end users on this platform to install and benefit from the package.