Environment file for quick installation, tested in Centos 7 with cuda…

[aswinjose89]

Environment file for quick installation, tested in Centos 7 with cuda 11.3 & pytorch 1.11

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[OpenMMLab-Assistant-004]

Hi @aswinjose89 ！We are grateful for your efforts in helping improve mmtracking open-source project during your personal time.

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