[RUMF-1280] collect click position

[amortemousque]

Motivation

To build clickmaps, the browser SDK needs to collect the action click position.

Changes

• Created a getSelectorFromElement to build the CSS path selector. It uses strategies the same way we have in getActionNameFromElement
• Every newClick of trackClickActions:
  • adds action.position: Contains x and y click coordinates
  • adds action.target.selector: CSS selector path of the target element
  • adds action.target.width and action.target.height: Dimension of the target element used to compute relative coordinate in the backend

Testing

• Local
• Staging
• Unit
• End to end

---

I have gone over the contributing documentation.

[codecov-commenter]

Codecov Report

Merging #1566 (284bc7d) into main (56d5b2f) will increase coverage by 0.00%.
The diff coverage is 91.30%.

@@           Coverage Diff           @@
##             main    #1566   +/-   ##
=======================================
  Coverage   90.75%   90.76%           
=======================================
  Files         119      121    +2     
  Lines        4468     4537   +69     
  Branches     1001     1018   +17     
=======================================
+ Hits         4055     4118   +63     
- Misses        413      419    +6     

Impacted Files	Coverage Δ
...ain/rumEventsCollection/action/actionCollection.ts	95.45% <ø> (ø)
packages/core/src/tools/utils.ts	85.29% <57.14%> (-1.76%)	⬇️
...mEventsCollection/action/getSelectorFromElement.ts	100.00% <100.00%> (ø)
...in/rumEventsCollection/action/trackClickActions.ts	97.95% <100.00%> (+0.08%)	⬆️
packages/rum-core/test/createIsolatedDom.ts	100.00% <100.00%> (ø)

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