ci(config): Consolidate versioning

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Consolidate versioning to a single managed version file. Also enforce this at the CI by using a script to confirm all dll's have the correct version information.

This addresses part of #387

[greptile-apps]

Greptile Summary

This PR consolidates assembly versioning into one managed file. The main changes are:

• Adds a repository-level Directory.Build.props with the shared version.
• Imports the shared version from six library property files.
• Adds version checks to the build target and CI workflow.
• Documents the new CheckVersions command.

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed production code.
• The version-check target runs after the full solution build.
• The library property files resolve the shared repository version.

Important Files Changed

Filename	Overview
Directory.Build.props	Defines the shared repository version.
Build.fs	Adds a version-check target that depends on the full solution build.
.github/workflows/build.yml	Runs version validation after the existing build and test target.
src/Informedica.GenFORM.Lib/Directory.Build.props	Replaces the local version with an import of the shared version.
src/Informedica.GenORDER.Lib/Directory.Build.props	Replaces the local version with an import of the shared version.
src/Informedica.GenSOLVER.Lib/Directory.Build.props	Replaces the local version with an import of the shared version.
src/Informedica.GenUNITS.Lib/Directory.Build.props	Replaces the local version with an import of the shared version.
src/Informedica.NKF.Lib/Directory.Build.props	Replaces the local version with an import of the shared version.
src/Informedica.Utils.Lib/Directory.Build.props	Replaces the local version with an import of the shared version.

_{Reviews (1): Last reviewed commit: "Merge branch 'master' into consolidate-v..." | Re-trigger Greptile}

[7sharp9]

@halcwb Notice CheckSolutionVersions.fsx now runs successfully with the latest commit.