[chore] Additional test case cases for SQL sanitisation and summary

[stevejgordon]

Changes

Adds extra test cases for SQL query text sanitisation and summary parsing to cover more scenarios.

We have used these test cases in the .NET implementation while refining and optimising it.

An open area for discussion is whether it should be optional to skip numeric literal sanitisation when the value is used as part of a TOP (e.g. SELECT TOP (10) FROM MyTable) statement or type declaration (e.g. ALTER TABLE Orders ADD COLUMN OrderStatus NVARCHAR(50)). The tests currently allow this as an optional expectation.

cc @alanwest

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