Introduce types to ajs core

[juliofarah]

Description

This PR adds types to most of the functions and variables in analytics.ts. Unfortunately, it is pretty hard to strictly type functions as some of them assume parameters with multiple types (such as function | object | string).

Types added in this PR are still work in progress and must be updated.

bonus:

• Update PR Template
• Update CODEOWNERS

Test plan

Testing completed successfully with make watch-e2e on ajs private:

Release plan

New version is not required because this is still work in progress

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (master@7c85af7). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #166   +/-   ##
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  Coverage          ?   96.36%           
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  Files             ?        3           
  Lines             ?       55           
  Branches          ?        0           
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  Hits              ?       53           
  Misses            ?        2           
  Partials          ?        0           

Impacted Files	Coverage Δ
lib/utils/each.js	90.47% <0.00%> (ø)
lib/utils/clone.js	100.00% <0.00%> (ø)
lib/utils/map.js	100.00% <0.00%> (ø)

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[williamgrosset]

Will re-review after test plan. Do we want to break these PRs into two? One for updating PR templates and the other for types?

[juliofarah]

Will re-review after test plan. Do we want to break these PRs into two? One for updating PR templates and the other for types?

@williamgrosset nah I think it's fine to keep both in the same PR
PR template is one of those things we just do small tweaks from time to time, no need to create a new PR for it

[danieljackins]

🔥