Added capm MIM DRC rules from sky130.tech in open_pdks.#263

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diadatp wants to merge 2 commits intogoogle:mainfrom

diadatp:capm_data

Commits on Nov 24, 2020

Added capm MIM DRC rules from sky130.tech in open_pdks.
diadatp
committed

Commits on Nov 28, 2020

Updated capm and cap2m design rules. Added files missing from last commit.
diadatp
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