[feature] #3525: Standardize transaction API

[mversic]

Description

Rules:

• Never use structs named *Box in the client code or integration tests.
  These structs exist only for serialization. If you write this type explicitly, this is a smell and user facing API should be updated.
• Never refer to V1 in any crate except data_model or in tests in other crates.
  Ideally, any versioned struct(I mean SignedTransaction should be private, not VersionedSignedTransaction) should not be accessible from outside code. This isn't possible atm because of some tests. We want the code in core/client to be version agnostic
• there should be only one tranasction/block type in the data_model and it should be the 1st in the lifecycle
  except for the first, all other state transitions are internal and must not be exposed through data_model. This also means that VersionedCommittedBlock should be replaced with VersionedSignedBlock. This will be addressed in the next PR

Linked issue

Closes #3525

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 5122726761

• 541 of 911 (59.39%) changed or added relevant lines in 53 files are covered.
• 176 unchanged lines in 17 files lost coverage.
• Overall coverage increased (+0.03%) to 57.925%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
core/src/smartcontracts/isi/block.rs	1	2	50.0%
core/src/smartcontracts/isi/world.rs	0	1	0.0%
core/src/smartcontracts/mod.rs	0	1	0.0%
data_model/src/evaluate.rs	0	1	0.0%
data_model/src/events/data/events.rs	5	6	83.33%
data_model/src/events/mod.rs	2	3	66.67%
data_model/src/peer.rs	0	1	0.0%
data_model/src/visit.rs	0	1	0.0%
cli/src/torii/mod.rs	0	2	0.0%
core/src/smartcontracts/isi/tx.rs	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
core/src/block.rs	1	57.37%
core/src/gossiper.rs	1	0%
crypto/src/hash.rs	1	58.33%
data_model/src/events/pipeline.rs	1	78.4%
data_model/src/ipfs.rs	1	91.75%
data_model/src/lib.rs	1	50.82%
data_model/src/query.rs	1	20.72%
data_model/src/trigger.rs	1	43.62%
core/test_network/src/lib.rs	2	0.18%
data_model/src/block.rs	2	45.59%

Totals
Change from base Build 5109908822:	0.03%
Covered Lines:	18232
Relevant Lines:	31475

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💛 - Coveralls

[0x009922]

LGTM, although I don't understand most of the changes.

[Erigara]

LGTM, couple of small comments