Add foojay-resolver-convention to auto-download the right JDK (#38139)

Summary:
Pull Request resolved: #38139

This adds https://github.com/gradle/foojay-toolchains to our build setup.
This will make sure that if the user doesn't have JDK 17 installed, it will be
autodownloaded once they try to build the first time.

Changelog:
[Internal] [Changed] - Add foojay-resolver-convention to auto-download the right JDK

Reviewed By: sammy-SC

Differential Revision: D47129944

fbshipit-source-id: fd49f6dfe5f87ce3f01e5cce3527144fb96f032a

settings.gradle.kts

@@ -28,7 +28,10 @@ if (File("${rootDir}/packages").exists()) {
 
 rootProject.name = "react-native-github"
 
-plugins { id("com.gradle.enterprise").version("3.7.1") }
+plugins {
+  id("com.gradle.enterprise").version("3.7.1")
+  id("org.gradle.toolchains.foojay-resolver-convention").version("0.5.0")
+}
 
 // If you specify a file inside gradle/gradle-enterprise.gradle.kts
 // you can configure your custom Gradle Enterprise instance