[CI/CD] Add extra lint/validators for cluster XMLs

[andy31415]

We currently do not validate XML for clusters at all for the chip XMLs that reside in https://github.com/project-chip/connectedhomeip/tree/master/src/app/zap-templates/zcl/data-model/chip

In theory we have https://github.com/project-chip/zap/blob/master/zcl-builtin/shared/schema/zcl.xsd that can validate the schema. Should figure out how zap-cli could be used to validate this or if not, use the xsd from the zap repo itself (even though that may be a version mismatch).

We also likely want some extra validation for some common typos (like forcing casing on things), to avoid PRs like #30740 and #29706 needing to be done over and over again.

This may need splitting into separate tasks:

• add validation for xsd (and this will find issues that need fixing)
• add casing enforcement for some standard types (either in matter or in xml files)

[andy31415]

we should catch typos such as found by #31015