Replace TypeCheckError by Custom Error

[ckunki]

In the scope of PR #225 fixing mypy warnings regarding type checks some errors were added to be raised in the builders inside package exasol.analytics.schema.

The errors are of type TypeCheckError in order to avoid changing the unit tests which only expected errors raise d by typeguard up to now.

Acceptance Criteria

• Create custom error class
• Replace raised TypeCheckError errors with custom error class
• Update Unit tests