🔧 Add Next.js documentation and make package public

[BeltranBulbarellaDD]

Motivation

Until we release and merge ✨ RUM Browser NextJS Integration it would be nice to have an internal docs for when we release in Beta.
This would be remove to point to the one in the Docs page when we have uploaded it.

Also makes the Public Public so we can publish on next release.

Changes

Update rum-nextjs README.MD
Add version tag and remove "private": true, in package.json

Test instructions

n/a

Checklist

• Tested locally
• Tested on staging
• Added unit tests for this change.
• Added e2e/integration tests for this change.
• Updated documentation and/or relevant AGENTS.md file

[datadog-prod-us1-3]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 77.31%

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 492c698 | Docs | Datadog PR Page | Was this helpful? React with 👍/👎 or give us feedback!}

[cit-pr-commenter-54b7da]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	N/A	176.56 KiB	N/A	N/A	N/A
Rum Profiler	N/A	6.16 KiB	N/A	N/A	N/A
Rum Recorder	N/A	27.46 KiB	N/A	N/A	N/A
Logs	N/A	56.88 KiB	N/A	N/A	N/A
Rum Slim	N/A	132.19 KiB	N/A	N/A	N/A
Worker	N/A	23.63 KiB	N/A	N/A	N/A

🚀 CPU Performance

Action Name	Base CPU Time (ms)	Local CPU Time (ms)	𝚫%
addglobalcontext	N/A	0.0039	N/A
addaction	N/A	0.0127	N/A
adderror	N/A	0.0126	N/A
addtiming	N/A	0.0026	N/A
startview	N/A	0.012	N/A
startstopsessionreplayrecording	N/A	0.0006	N/A
logmessage	N/A	0.0141	N/A

🧠 Memory Performance

Action Name	Base Memory Consumption	Local Memory Consumption	𝚫
addglobalcontext	N/A	26.88 KiB	N/A
addaction	N/A	51.12 KiB	N/A
addtiming	N/A	25.59 KiB	N/A
adderror	N/A	54.59 KiB	N/A
startstopsessionreplayrecording	N/A	26.29 KiB	N/A
startview	N/A	462.13 KiB	N/A
logmessage	N/A	45.11 KiB	N/A

🔗 RealWorld

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: a31b7dccfd

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[domalessi]

Left some suggestions/feedback. Approving so you're not blocked on me, but hit me up if you have Qs or want me to take another look!