[WIP] Benchmark gpu based resize performance

[ajatprabha]

Ref: #19

This is an experimental work as of now.

Setup

GPU Info

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 430.26       Driver Version: 430.26       CUDA Version: 10.2     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce GTX 960M    Off  | 00000000:01:00.0 Off |                  N/A |
| N/A   53C    P0    N/A /  N/A |    510MiB /  4046MiB |     31%      Default |
+-------------------------------+----------------------+----------------------+

Load

33% Average GPU utilization.
100% Single CPU thread utilization.

CPU Info

Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz x 8

Load

43% Average Muilti-thread(x8) utilization.

Benchmark Results

goos: linux, goarch: amd64

Name	Iterations	ns/op	Total Time (s)
BenchmarkOpenCVProcessor_GpuResize-8	1000	53772393	59.366
BenchmarkBildProcessor_Resize-8	200	232417595	69.710