📝 Typedoc setup and theme

[rgaignault]

Motivation

This PR introduces automated API reference generation for the Browser SDK using API generator. It addresses documentation inconsistencies by centralizing the public API surface, improving maintainability, and enabling integration into Datadog Docs or GitHub Pages.

Changes

Setup typedoc and material theme with a custom css
This PR is completed by this one to enhance comment, add missing ones.

Test instructions

use yarn:docs and yarn:serve to test locally or visit the github pages

Checklist

• Tested locally
• Tested on staging
• Added unit tests for this change.
• Added e2e/integration tests for this change.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.33%. Comparing base (5de4d1d) to head (09747be).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3676   +/-   ##
=======================================
  Coverage   92.33%   92.33%           
=======================================
  Files         333      333           
  Lines        8313     8313           
  Branches     1871     1871           
=======================================
  Hits         7676     7676           
  Misses        637      637           

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[cit-pr-commenter]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	149.17 KiB	149.17 KiB	0 B	0.00%	✅
Rum Recorder	17.91 KiB	17.91 KiB	0 B	0.00%	✅
Rum Profiler	5.15 KiB	5.15 KiB	0 B	0.00%	✅
Logs	52.87 KiB	52.87 KiB	0 B	0.00%	✅
Flagging	0 B	931 B	931 B	N/A%	✅
Rum Slim	107.87 KiB	107.87 KiB	0 B	0.00%	✅
Worker	23.60 KiB	23.60 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base Average Cpu Time (ms)	Local Average Cpu Time (ms)	𝚫
addglobalcontext	0.016	0.011	-0.005
addaction	0.026	0.025	-0.001
addtiming	0.005	0.007	0.002
adderror	0.031	0.028	-0.003
startstopsessionreplayrecording	0.006	0.006	0.000
startview	0.014	0.010	-0.003
logmessage	0.023	0.037	0.014

🧠 Memory Performance

Action Name	Base Consumption Memory (bytes)	Local Consumption Memory (bytes)	𝚫 (bytes)
addglobalcontext	28.31 KiB	27.49 KiB	-843 B
addaction	56.06 KiB	56.24 KiB	180 B
addtiming	27.37 KiB	26.84 KiB	-544 B
adderror	58.99 KiB	60.82 KiB	1.83 KiB
startstopsessionreplayrecording	25.33 KiB	24.96 KiB	-378 B
startview	430.49 KiB	428.21 KiB	-2337 B
logmessage	60.25 KiB	100.82 KiB	40.57 KiB

🔗 RealWorld