feat: support vector literals

[ChunxuTang]

This PR adds the support of vector literals in vector search. E.g.

MATCH (p:Person)
WHERE vector_distance(p.embedding, [1.0, 0.0, 0.0], l2) < 0.2
RETURN p.name ORDER BY p.name

[codecov-commenter]

Codecov Report

❌ Patch coverage is 89.81481% with 11 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
rust/lance-graph/src/parser.rs	93.40%	6 Missing ⚠️
rust/lance-graph/src/semantic.rs	42.85%	4 Missing ⚠️
rust/lance-graph/src/simple_executor/expr.rs	0.00%	1 Missing ⚠️

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