feat: improve qr detection and add jpg support (#21) #12

Job	Run time
release / Configure compilation targets	4s
release / get-next-version / Get next release version	6s
release / Test aarch64-unknown-linux-gnu	2m 47s
release / Test aarch64-unknown-linux-musl	3m 33s
release / Test i686-unknown-linux-gnu	1m 31s
release / Test i686-unknown-linux-musl	1m 33s
release / Test x86_64-apple-darwin	48s
release / Test x86_64-unknown-linux-gnu	34s
release / Test x86_64-unknown-linux-musl	59s
release / (swiss-qr-bill-decoder, aarch64-apple-darwin)	2m 13s
release / (swiss-qr-bill-decoder, aarch64-unknown-linux-gnu)	1m 20s
release / (swiss-qr-bill-decoder, aarch64-unknown-linux-musl)	2m 0s
release / (swiss-qr-bill-decoder, i686-unknown-linux-gnu)	1m 50s
release / (swiss-qr-bill-decoder, i686-unknown-linux-musl)	1m 50s
release / (swiss-qr-bill-decoder, x86_64-apple-darwin)	1m 32s
release / (swiss-qr-bill-decoder, x86_64-unknown-linux-gnu)	1m 34s
release / (swiss-qr-bill-decoder, x86_64-unknown-linux-musl)	1m 38s
release / Release	3m 43s
	29m 35s

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