feat(cli): Add 64x64 png to default `tauri icon` command (#12204) #12

Job	Run time
test (x86_64-pc-windows-msvc, windows-latest, 1.77.2, false, test, --no-default-features, no-defa...	5m 15s
test (x86_64-pc-windows-msvc, windows-latest, 1.77.2, false, test, --all-features, all)	9m 10s
test (x86_64-unknown-linux-gnu, ubuntu-latest, 1.77.2, false, test, --no-default-features, no-def...	4m 7s
test (x86_64-unknown-linux-gnu, ubuntu-latest, 1.77.2, false, test, --all-features, all)	7m 10s
test (aarch64-apple-darwin, macos-14, 1.77.2, false, test, --no-default-features, no-default)	2m 21s
test (aarch64-apple-darwin, macos-14, 1.77.2, false, test, --all-features, all)	3m 54s
test (aarch64-apple-ios, macos-latest, 1.77.2, false, build, --no-default-features, no-default)	1m 17s
test (aarch64-apple-ios, macos-latest, 1.77.2, false, build, --all-features, all)	1m 22s
test (aarch64-linux-android, ubuntu-latest, 1.77.2, true, build, --no-default-features, no-default)	1m 45s
test (aarch64-linux-android, ubuntu-latest, 1.77.2, true, build, --all-features, all)	1m 27s
	37m 48s

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