docs: Add documentation for how to integrate mediation using the react plugin

[malandr2]

Add documentation for how to integrate mediation using the react plugin

Description

Improve the coverage of mediation documentation for react publishers.

Release Summary

Add documentation for how to integrate mediation adapters

Checklist

• I read the Contributor Guide
  and followed the process outlined there for submitting PRs.
  • Yes
• My change supports the following platforms;
  • Android
  • iOS
• My change includes tests;
  • e2e tests added or updated in __tests__e2e__
  • jest tests added or updated in __tests__
• I have updated TypeScript types that are affected by my change.
• This is a breaking change;
  • Yes
  • No

Test Plan

---

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[docs-page]

To view this pull requests documentation preview, visit the following URL:

docs.page/invertase/react-native-google-mobile-ads~786

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[CLAassistant]

All committers have signed the CLA.

[ericleich]

LGTM with comments

[dylancom]

As Expo pretty much became the default framework to initiate a new React Native project I advise to also make a guide on how to create a local module for the adapters in Expo.
See for e.g. our installation guide we have tabs for both Bare React Native and Expo.

[dylancom]

And to add a pod / dependency/maven to an Expo project, expo-build-properties is needed.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 36.34%. Comparing base (a34c7ba) to head (02db1eb).
⚠️ Report is 185 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #786      +/-   ##
==========================================
- Coverage   43.72%   36.34%   -7.37%     
==========================================
  Files          30       37       +7     
  Lines         549      677     +128     
  Branches      151      180      +29     
==========================================
+ Hits          240      246       +6     
- Misses        309      431     +122     

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• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
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[malandr2]

And to add a pod / dependency/maven to an Expo project, expo-build-properties is needed.

Added an Expo tab with steps to integrate. PTAL

[malandr2]

As Expo pretty much became the default framework to initiate a new React Native project I advise to also make a guide on how to create a local module for the adapters in Expo. See for e.g. our installation guide we have tabs for both Bare React Native and Expo.

Thanks, added steps to create local module in its own dedicated Expo tab. PTAL