GotoUdon - 1.3.0 Local testing

WARNING: PLEASE UPDATE VRCHAT SDK TO NEWEST VERSION MANUALLY, REMOVE OLD SDK FOLDER AND IMPORT NEW ONE. And restart unity.

VrChat restored local testing, and now GotoUdon can work with local testing worlds, allowing you to use multiple profiles in your local world. As local testing without multiple profiles is still pretty bad: https://vrchat.canny.io/sdk-bug-reports/p/sdk862-offline-test-option-is-broken-with-multiple-clients

NOTE: this version ONLY supports client manager, emulation will be restored in 1.4.0. (many changes in API, not enough time right now)