Refactor Android init methods for more flexibility #988

Job	Run time
Ktlint	39s
Clippy (stable) (ubuntu-latest)	1m 1s
Clippy (-Zbuild-std)	58s
Clippy (stable) (macos-latest)	36s
Clippy (MSRV) (ubuntu-latest)	54s
Check for documentation errors	12s
Clippy (stable) (windows-latest)	1m 9s
Clippy (MSRV) (macos-latest)	1m 17s
Rustfmt	17s
Clippy (MSRV) (windows-latest)	1m 35s
Check semver compatibility	20s
Test (ubuntu-latest)	13s
Test (Android)	3m 24s
Test (macos-latest)	22s
Test iOS (Catalyst)	23s
Test (windows-latest)	2m 23s
Test (FreeBSD)	2m 17s
Verify Android artifacts	1m 52s
	19m 52s

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