feat: define global for enabling Performance

[hoxyq]

Summary

Defined a field on globalThis that can be used for disabling the experiment around Performance panel, and which will enable it by default.

The type any is used because technically, this value is defined at runtime and we can't guarantee its type.

Test plan

• This change maintains backwards compatibility with previous Local Storage data (if modifying settings, experiments, or other persisted client state).

Upstreaming plan

• This commit should be sent as a patch to the upstream devtools-frontend repo. I've reviewed the contribution guide.
• This commit is React Native-specific and cannot be upstreamed.