Introduce a rake task to migrate from asdf to mise

Overview

We should consider providing an automated solution to help developers migrate from asdf to mise. This could be a rake task or documentation to guide the migration process.

Business impact

Mise will replace asdf as tooling manager to install third-party dependencies like Ruby and Postgres in GDK. Mise is faster and more stable. It also claims to be more secure.

Offering an automated way to migrate will save engineering time and incentivize the migration, so more engineers use a shared toolset.

Impacted categories

The following categories relate to this issue:

• gdk-reliability - e.g. When a GDK action fails to complete.
• gdk-usability - e.g. Improvements or suggestions around how the GDK functions.
• gdk-performance - e.g. When a GDK action is slow or times out.