feat: move assets to https://github.com/TuGraph-family/gi-assets-tugr…

[pomelo-nwu]

• G6VP 一方资产研发方案需要 .git ，因此需要独立资产包：feat: 支持以一方包形式开发三方资产 antvis/G6VP#354

[CLAassistant]

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