Refactor `count_distinct_keys_info` #1120

Job	Run time
Compilation for NanoS, X, S+, and Stax (nanos, $NANOS_SDK)	1m 49s
Compilation for NanoS, X, S+, and Stax (nanox, $NANOX_SDK)	1m 48s
Compilation for NanoS, X, S+, and Stax (nanosp, $NANOSP_SDK)	1m 47s
Compilation for NanoS, X, S+, and Stax (stax, $STAX_SDK)	1m 58s
Tests with the Python library and legacy Bitcoin app	48s
Tests on mainnet (nanos)	34s
Tests on mainnet (nanox)	31s
Unit test	2m 19s
Tests (nanos)	8m 33s
Tests on mainnet (nanosp)	32s
Tests (nanox)	8m 48s
Tests on mainnet (stax)	35s
Tests with the JS library	1m 28s
Tests (nanosp)	9m 5s
Tests for rust client library	1m 44s
Tests (stax)	51m 27s
	1h 33m 46s

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