Add new checker rules

[AsamDiegoSanchez]

Is your feature request related to a problem? Please describe.
Keep add new rules and their checker implementation

Describe the solution you'd like
Add rules in the documentation
Create the checker in the GitHub checker bundle: https://github.com/asam-ev/qc-openmaterial-3d/tree/develop

[ClemensLinnhoff]

Proposed rules:

A.2.2 XOMM

material_uris_exist

UID

asam.net:xom-geo:1.1.0:xomm.material_uris_exist

Description

All URIs to material files (xomp) shall point to existing files.

[ClemensLinnhoff]

List of rules needed for pull requests of version 1.1.0:

• Add schema reference to all example files #456: Add a rule that each json file shall have a reference to the corresponding schema
• 448 further define lights #458: The nodes referenced in lightDefinitions.node need to exist in the 3D data file
• 448 further define lights #458: The nodes referenced in emissiveLightMapping.assoc_node need to exist in the 3D data file
• 448 further define lights #458: The material referenced in emissiveLightMapping.material_name needs to exist in the 3D data file
• Add externalAssetReferences to schema and documentation 2 #118 #465: The node referenced in externalAssetReferences.reference_node needs to exist in the 3D data file
• Add thickness parameter #471: The node referenced in geometryProperties.node needs to exist in the 3D data file