Retemplate all SunPy Maintained Packages

[Cadair]

Initial Retemplate of all repos

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1. radiospectra : Registers package with the sunpy packaging radiospectra#115
2. sunkit-spex : Registers package with sunpy template sunkit-spex#159
3. sunraster : Registers package with the SunPy template sunraster#259
4. drms : Registers package with sunpy template drms#120
5. sunkit-instruments : Registers package with sunpy template sunkit-instruments#133
6. sunkit-pyvista : Registers sunkit-pyvista with template sunkit-pyvista#163
7. sunkit-image : Register template sunkit-image#202
8. mpl-animators : Registers package to sunpy template mpl-animators#48
9. sunkit-dem : add cruft sunkit-dem#33
10. sunpy : Updates Sunpy core with package template sunpy#7494
11. streamtracer : Merge in sunpy package template streamtracer#111
12. sunkit-magex
13. soar : Register template sunpy-soar#116
14. ndcube : Register template ndcube#672