Add simple block node E2E tests

[xin-hedera]

Description:

This PR adds a block node simulator for E2E testing with mirrornode.

• Add BlockNodeSimulator and BlockGenerator
• Add a base integration test class and two simple test cases

Related issue(s):

Fixes #11543

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
❌ -32.37% (target: -1.00%)	✅ 100.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (88bbf15)	36340	34038	93.67%
Head commit (fd10ab3)	59836 (+23496)	36674 (+2636)	61.29% (-32.37%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#11707)	1	1	100.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[lfdt-bot]

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