python: Use Python's logging through pyo3_log #1125

Job	Run time
generate-fstar	2m 2s
check-style	20s
test-lakers-python	1m 3s
unit-tests-default	50s
unit-tests (lakers-crypto/psa, ead-none)	1m 14s
unit-tests (lakers-crypto/psa, ead-authz)	1m 5s
unit-tests (lakers-crypto/rustcrypto, ead-none)	43s
unit-tests (lakers-crypto/rustcrypto, ead-authz)	41s
build-coap-example	49s
build-lakers-c (crypto-rustcrypto)	1m 14s
build-example-for-cortex-m4 (crypto-psa)	1m 26s
build-edhoc-package (lakers-crypto/psa)	1m 25s
build-lakers-c (crypto-psa-baremetal)	1m 17s
build-example-for-cortex-m4 (crypto-cryptocell310)	1m 17s
build-edhoc-package (lakers-crypto/psa-baremetal)	1m 19s
build-lakers-c-example	2m 11s
build-lakers-c (crypto-cryptocell310)	1m 22s
build-edhoc-package (lakers-crypto/cryptocell310)	1m 15s
build-edhoc-package (lakers-crypto/rustcrypto)	1m 13s
run-example-on-qemu (crypto-psa)	1m 57s
release	0s
	24m 43s

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