Removing Settings mixin and use .nsdUploadButton prop

[juancho0202]

Related to #306

Currently the Settings Mixin in the compas-open-scd package is a slightly modified version of the Settings mixin in the open-scd package with the sole difference of removing the lines that allow users to load custom nsdoc files.

OpenSCD already features a way to disable that button via a prop https://github.com/openscd/open-scd/blob/56cc548de4311dd7a0c92bd514d313896b08482f/packages/open-scd/src/addons/Settings.ts#L116C3-L116C18

Acceptance criteria:

• The settings mixin is removed from compas-open-scd
• We pass down to the <open-scd> tag a prop called nsdUploadButton = false

[juancho0202]

On hold until #324 (Update compas-open-scd with the latest version of open-scd) is done

[github-actions]

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