Add expression-based rules for REDEFINES

[yruslan]

Background

Currently, automatic handling of REDEFINES is possible only for multi-segment copybooks. But since Cobrix has an expression language already for defining record length offsets, it can be applied to specify when redefined columns are valid, saving time on parsing these fields.

Feature

Add expression-based rules for REDEFINES.

Example [Optional]

.option("redefine-rule:1", "COL1 => RECORD_TYPE=2")
.option("redefine-rule:2", "COL2 => RECORD_TYPE=3")

Proposed Solution [Optional]

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