build: Enable android builds in github ci #68

Job	Run time
code-format	7s
check_cdl	30s
windows (amd64)	4m 18s
linux (none sanitizer, debug)	2m 13s
windows (amd64_x86)	4m 5s
android (arm64-v8a)	3m 10s
Ubuntu Backcompat	48s
linux (none sanitizer, release)	2m 50s
android (armeabi-v7a)	3m 23s
linux (address sanitizer, debug)	3m 23s
linux (address sanitizer, release)	3m 57s
linux (thread sanitizer, debug)	3m 12s
linux (thread sanitizer, release)	2m 45s
	34m 41s

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