Added ST_SDIP-25L

[aris-kimi]

Addition of ST_SDIP-25L package for STGIPSxxxx 3phase inverter modules.

I have tried to create a footprint library for IGBT modules named Transistor_IGBT_Module.
The symbol is renamed as ST_SDIP-25L. Dimensions omitted from the description.

This is a custom design, from the datasheet footprint info provided: www.st.com/resource/en/datasheet/cd00244265.pdf

I have some text at the visible silk side in order to provide mounting details on the pcb's surface.

Edit:

About drill hole dia i am not sure but i have used max values from datasheet.

Logic pin holes: Max diagonal 0.919 (0.65/0.65) + 0.2 = 1.1mm
Pads: 1.8mm

Power pin holes: Max diagonal 1.320 (0.65/1.15) + 0.2 = 1.5mm
Pads: 3mm

Mount holes: 6mm Dia

3D PR: KiCad/kicad-packages3D#702

Update body diagonal cut and i think now i am ok with clearances:

Updated:

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All contributions to the kicad library must follow the KiCad library convention

Thanks for creating a pull request to contribute to the KiCad libraries! To speed up integration of your PR, please check the following items:

• Provide a URL to a datasheet for the footprint(s) you are contributing
• An example screenshot image is very helpful
• If there are matching symbol or 3D model pull requests, provide link(s) as appropriate
• Check the output of the Travis automated check scripts - fix any errors as required
• Give a reason behind any intentional library convention rule violation.

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Be patient, we maintainers are volunteers with limited time and need to check your contribution against the datasheet. You can speed up the process by providing all the necessary information (see above). And you can speed up the process even more by providing a dimensioned drawing of your contribution. A tutorial on how to do that is found here: https://forum.kicad.info/t/how-to-check-footprint-correctness/9279 (This is optional!)

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[aris-kimi]

I think this one is finaly ready.