Up to IP v1.6.3

[sudwebdesign]

Checklist

• My code follows the code formatting guidelines.
• I have tested my changes locally.
• I selected the appropriate branch for this PR.
• I have rebased my changes on top of the selected branch.
• I included relevant documentation updates if necessary.
• I have an accompanying issue ID for this pull request.

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Description

Simplify the creation of themes, use new core scss files (input style, stamp, ...).

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Motivation and Context

this change is necessary if PR #1203 of IP as merged.

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Issue Type (Check one or more)

• Bugfix
• Improvement of an existing feature
• New feature