Add requirements and measures to systemcard

[ravimeijerrig]

Description

In this PR, we introduce the following new fields to the system cards:

• Fields for storing requirements, including URN, state, and version.
• Fields for storing measures, including URN, state, value, and version.

Checklist

Please check all the boxes that apply to this pull request using "x":

• I have tested the changes locally and verified that they work as expected.
• I have followed the project's coding conventions and style guidelines.
• I have rebased my branch onto the latest commit of the main branch.
• I have squashed or reorganized my commits into logical units.
• I have read, understood and agree to the Developer Certificate of Origin below, which this project utilizes.

Developer Certificate of Origin

Developer Certificate of Origin
Version 1.1

Copyright (C) 2004, 2006 The Linux Foundation and its contributors.

Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.

Developer's Certificate of Origin 1.1

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(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
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(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
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(c) The contribution was provided directly to me by some other
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(d) I understand and agree that this project and the contribution
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[laurensWe]

LGTM