Add global typings to path

[EdmondChuiHW]

Summary

As discussed in #16 (comment)

Itooks like linter doesn't check the .d.ts. The upstream file here doesn't have license and the linter doesn't complain:

rn-chrome-devtools-frontend/front_end/global_typings/request_idle_callback.d.ts

Line 1 in 9370b35

type RequestIdleCallbackHandle = any;

Adding ours to the list for clarity of intention.

Test plan

npm run check-lint

(Ignore the unrelated files)

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.

[motiz88]

@EdmondChuiHW, note that you ended up merging a commit with an unclear title to main.

[EdmondChuiHW]

@motiz88 sorry. Thought the squash-and-merge option would take the PR title. Will make sure to double-check that in the future