[ImgBot] Optimize images

*Total -- 14,775.42kb -> 14,171.02kb (4.09%)

/static/textures/floor/GroundForest003_DISP_3K.jpg -- 1,270.95kb -> 1,187.19kb (6.59%)
/static/textures/floor/GroundForest003_ROUGH_3K.jpg -- 2,209.91kb -> 2,083.61kb (5.72%)
/static/textures/floor/GroundForest003_COL_VAR1_3K.jpg -- 2,634.31kb -> 2,506.17kb (4.86%)
/static/textures/floor/GroundForest003_NRM_3K.jpg -- 2,924.41kb -> 2,791.66kb (4.54%)
/readme/finalresult.gif -- 5,735.84kb -> 5,602.39kb (2.33%)

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