add sysML to the development release

[TomTravis]

https://github.com/Systems-Modeling/SysML-v2-Release

Release of you choice
The release repository contains the items listed below. For a Zip archive of the entire repository contents, go to https://github.com/Systems-Modeling/SysML-v2-Release/releases and download the appropriate version.

In the doc directory.
Introductory presentations on the SysML v2 notation
Intro to the SysML v2 Language-Textual Notation.pdf
Intro to the SysML v2 Language-Graphical Notation.pdf
SysML v2 specification documents (PDF)
Kernel Modeling Language (KerML), version 1.0
OMG Systems Modeling Language (SysML), version 2.0 2.C SysML v1 to SysML v2 Transformation (Annex C of the SysML specification)
Systems Modeling Application Programming Interface (API) and Services, version 1.0
In the install directory
eclipse - Installer for Eclipse plugins for Kernel Modeling Language (KerML) and System Modeling Language (SysML) editors
jupyter - Installer for a SysML language kernel for Jupyter, with JupyterLab integration (for more information on Jupyter, see https://jupyter.org/)
SysML v2 model projects (textual notation)
kerml - Example models in the Kernel Modeling Language (KerML)
sysml - Example models in the Systems Modeling Language (SysML) v2
sysml.library - Normative model libraries for both KerML and SysML

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[TomTravis]

initial install took place update is ongoing