[fix] #4397: Make queue tests use a mock time source

[DCNick3]

Description

This PR adds a TimeSource to iroha_primitives - a mockable time source. It then proceeds to make the queue tests use the mock time source to make them deterministic.

Linked issue

Closes #4397

Benefits

• less flaky CI
• ability to mock transaction times (useful here)

Checklist

• make CI pass

[DCNick3]

We still use SystemTime in BlockBuilder<Pending>::make_header(), but it doesn't seem to be a source of flakiness for now.

[coveralls]

Pull Request Test Coverage Report for Build 8506806320

Details

• 211 of 228 (92.54%) changed or added relevant lines in 3 files are covered.
• 5314 unchanged lines in 95 files lost coverage.
• Overall coverage increased (+0.9%) to 57.684%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
core/src/queue.rs	159	160	99.38%
primitives/src/time.rs	26	42	61.9%

Files with Coverage Reduction	New Missed Lines	%
primitives/src/conststr.rs	1	91.14%
crypto/src/hash.rs	1	73.78%
ffi/derive/src/convert.rs	1	84.45%
primitives/src/lib.rs	1	0.0%
core/src/sumeragi/network_topology.rs	1	98.78%
primitives/src/must_use.rs	2	74.29%
crypto/src/signature/bls/mod.rs	2	0.0%
config/src/snapshot.rs	3	78.57%
data_model/derive/src/has_origin.rs	3	95.16%
config/src/kura.rs	3	80.0%

Totals
Change from base Build 7884695009:	0.9%
Covered Lines:	23489
Relevant Lines:	40720

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💛 - Coveralls