chore: remove unmaintained vue and go packages

[msmps]

This PR removes unmaintained @opentui/vue and @opentui/go packages from monorepo.

A large part of OpenTUI project is implemented in TypeScript, which means language bindings need to reimplement a lot of API. This is why Go bindings fell behind and became unmaintained.

Given that both Go and Vue are now unmaintained fragments in monorepo, this change removes them to keep only what is officially supported: React, Solid and Core on top of Bun/TypeScript bindings.

Language bindings can then live in their own separate repositories, so they're also not a bottleneck for merges etc.

Changes:

• Deleted packages/vue/ directory
• Deleted packages/go/ directory
• Removed vue/go references from package.json scripts
• Removed vue/go support from release and publish scripts
• Updated GitHub workflows to remove vue dist packaging
• Deleted root install.sh (was only used for Go/native bindings)
• Updated README to list only supported packages (core, react, solid)