Fix: Escaping CDC function names in SQL queries

[AzerQ]

Problem:
When using SQL Server Change Data Capture (CDC) functions in SQL queries, if capture instance names or other object identifiers contain special characters or reserved keywords, a SQL syntax error may occur when constructing dynamic SQL queries.

Solution:

1. Added EscapeSqlServerObjectName() function to properly escape SQL Server object identifiers
2. Function wraps each part of the object name (separated by dots) in square brackets []
3. Updated GetChangesAsync() method to use the escaped CDC function name in SQL queries
4. Added System.Linq dependency for LINQ method usage

Changed Files:

1. CdcDatabase.cs: addition of escaping function and its usage in SQL queries