Speed up Android builds

[roryabraham]

Problem

Android builds typically take 10-30 minutes on my M2 Mac, which is a long time.

Solution

Research ways to speed them up

[roryabraham]

There are a few things I'd like to try:

• Enable gradle cache
• Enable gradle parallel task execution
• Enable ccache

[roryabraham]

In order to be methodic and quantitative with these changes, I'll be using ./gradlew build --scan to generate detailed build scan reports.

[roryabraham]

Build scan for a clean ./gradlew assembleDebug (note: next time I should do active arch only, because that's what we do in dev)

https://scans.gradle.com/s/4e4x4kl55d3js

[roryabraham]

Another clean build scan, this time only one arch: https://scans.gradle.com/s/4apezfw7xtotm

[roryabraham]

A build scan with only this diff:

diff --git a/android/gradle.properties b/android/gradle.properties
index 87333d20f74..1f60a7d335d 100644
--- a/android/gradle.properties
+++ b/android/gradle.properties
@@ -55,3 +55,6 @@ MYAPP_UPLOAD_KEY_ALIAS=ReactNativeChat-Key-Alias
 disableFrameProcessors=true
 
 android.nonTransitiveRClass=false
+
+org.gradle.parallel=true

https://scans.gradle.com/s/67qe4vuqgytyq