Inference models

Please unzip the "stage1_track1/2/3.zip" into "track1/2/3" and place them in "ntire-submission/stage1/work_dirs".

ntire-submission
`-- stage1
`   `-- work_dirs
`       `-- track1
`       `   `-- iter_1000.pth
`       `   `-- iter_16000.pth
`       `-- track2
`       `   `-- iter_3000.pth
`       `-- track3
`            `-- iter_8000.pth
`           `-- iter_11000.pth
`-- stage2
`-- conda_mmtest.yml