Cache Android Emulator generation

[markushi]

As outline in https://github.com/marketplace/actions/android-emulator-runner#usage--examples we can cache the android emulator AVD generation.

Savings per run:

• ~40s of execution time for setting up the emulator
• ~70s of execution time for a more efficient KVM setup

#skip-changelog

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	498.64 ms	567.53 ms	68.89 ms
Size	1.58 MiB	2.10 MiB	530.94 KiB

Previous results on branch: markushi/chore/speedup-agp-test-matrix

Startup times

Revision	Plain	With Sentry	Diff
9ecbb4f	436.71 ms	478.31 ms	41.60 ms
94ca325	370.51 ms	405.20 ms	34.69 ms
3120276	455.04 ms	486.08 ms	31.04 ms
5be9ee9	388.44 ms	433.20 ms	44.76 ms
0d52162	396.02 ms	458.04 ms	62.02 ms
3f00785	381.55 ms	419.53 ms	37.98 ms
43febdb	395.60 ms	431.50 ms	35.90 ms
dc2d922	385.00 ms	406.14 ms	21.14 ms

App size

Revision	Plain	With Sentry	Diff
9ecbb4f	1.58 MiB	2.09 MiB	521.83 KiB
94ca325	1.58 MiB	2.09 MiB	521.73 KiB
3120276	1.58 MiB	2.09 MiB	521.83 KiB
5be9ee9	1.58 MiB	2.09 MiB	521.57 KiB
0d52162	1.58 MiB	2.09 MiB	521.74 KiB
3f00785	1.58 MiB	2.09 MiB	521.56 KiB
43febdb	1.58 MiB	2.09 MiB	522.31 KiB
dc2d922	1.58 MiB	2.09 MiB	521.73 KiB

[romtsn]

LGTM!