[MOBILE-3815] Update unity

[Ulrico972]

What do these changes do?

• Update Unity to use the proxy
• Add missing features
• Update the structure of the framework

Why are these changes necessary?

To keep unity updated

How did you verify these changes?

Manual test on a sample app

Verification Screenshots:

Anything else a reviewer should know?

There is a dependency conflict and for now we need to add a mainTemplate.gradle to the sample then add those dependencies in it :

// Local change to fix the conflicts
    def lifecycle = '2.7.0'
    implementation("androidx.lifecycle:lifecycle-common-java8") {
        version {
            strictly("$lifecycle")
        }
    }
    implementation("androidx.lifecycle:lifecycle-livedata-ktx") {
        version {
            strictly("$lifecycle")
        }
    }
    implementation("androidx.lifecycle:lifecycle-runtime-ktx") {
        version {
            strictly("$lifecycle")
        }
    }
    implementation("androidx.lifecycle:lifecycle-runtime-compose") {
        version {
            strictly("$lifecycle")
        }
    }
    implementation("androidx.lifecycle:lifecycle-viewmodel") {
        version {
            strictly("$lifecycle")
        }
    }
    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx") {
        version {
            strictly("$lifecycle")
        }
    }