[FR] Partial Initialization for mediation adapters

[armnotstrong]

[REQUIRED] Step 1: Describe your environment

• Unity version: 2022.3.62_
• Google Mobile Ads Unity plugin version: 10.3.0_
• Plugin installation method: .unitypackage import_ (Unity package manager, .unitypackage import)
• Platform: Android,_ (iOS, Android, Unity Editor)
• Platform OS version: _____ (eg iOS 10, Android 9)
• Any specific devices issue occurs on: _____
• Mediation ad networks used, and their versions: _____

[REQUIRED] Step 2: Describe the problem

Proposal api for disabling initialization for specific mediation adapters. We are dealing with ANRs, we found a lot of ANRs are related to some mediations and low-performance users, so we thought stopping initialization of some adapters when users with low-performance devices might be useful, say only keep some adapters when user ram > 3G, etc. I checked the API and found it is hard to do so. So I propose an api to disable or enable specific adapters.

[NVentimiglia]

That is a good suggestion, I will pass it along.