[feature] #3355: Standardize block API

[mversic]

Description

• replaced VersionedCommittedBlock with VersionedSignedBlock
• improved block lifecycle and state transitions
• introduced BlockBuilder
• introduced ProofBuilder

Linked issue

Closes #3355 #3424 #3295 #2767

Benefits

Checklist

• I've read CONTRIBUTING.md
• I've used the standard signed-off commit format (or will squash just before merging)
• All applicable CI checks pass (or I promised to make them pass later)
• (optional) I've written unit tests for the code changes
• I replied to all comments after code review, marking all implemented changes with thumbs up

[coveralls]

Pull Request Test Coverage Report for Build 6223948900

• 707 of 1284 (55.06%) changed or added relevant lines in 43 files are covered.
• 5625 unchanged lines in 101 files lost coverage.
• Overall coverage decreased (-1.1%) to 58.327%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
cli/src/torii/routing.rs	0	1	0.0%
core/src/smartcontracts/isi/tx.rs	4	5	80.0%
core/src/tx.rs	3	4	75.0%
crypto/src/hash.rs	2	3	66.67%
tools/kagami/src/genesis.rs	0	1	0.0%
tools/kura_inspector/src/main.rs	0	1	0.0%
cli/src/event.rs	0	2	0.0%
cli/src/lib.rs	0	2	0.0%
cli/src/stream.rs	0	2	0.0%
client_cli/src/main.rs	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
cli/src/main.rs	1	0.0%
cli/src/torii/pagination.rs	1	98.9%
config/base/src/runtime_upgrades.rs	1	51.72%
config/src/torii.rs	1	96.67%
core/src/smartcontracts/isi/block.rs	1	87.5%
crypto/src/merkle.rs	1	96.23%
data_model/derive/src/partially_tagged.rs	1	99.67%
data_model/src/domain.rs	1	47.37%
data_model/src/events/execute_trigger.rs	1	30.77%
logger/src/lib.rs	1	95.15%

Totals
Change from base Build 5423219773:	-1.1%
Covered Lines:	21419
Relevant Lines:	36722

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💛 - Coveralls