update DFQ/EQ/Evaluate int8 perchannel quant tool

[BowShotDS]

Add DFQ and EQ quantization schemes for int8 perchannel quantization.
Add quantitative loss assessment function and corresponding input options.

[codecov]

Codecov Report

Merging #1112 (d1b68d8) into tengine-lite (baf47d3) will increase coverage by 0.32%.
The diff coverage is 1.20%.

❗ Current head d1b68d8 differs from pull request most recent head 120adf9. Consider uploading reports for the commit 120adf9 to get more accurate results

@@               Coverage Diff                @@
##           tengine-lite    #1112      +/-   ##
================================================
+ Coverage         47.70%   48.03%   +0.32%     
================================================
  Files               419      295     -124     
  Lines             31151    16019   -15132     
================================================
- Hits              14861     7694    -7167     
+ Misses            16290     8325    -7965     

Impacted Files	Coverage Δ
tools/quantize/algorithm/quant_dfq.cpp	0.00% <0.00%> (ø)
tools/quantize/algorithm/quant_eq.cpp	0.00% <0.00%> (ø)
tools/quantize/quant_save_graph.cpp	42.93% <0.00%> (-0.25%)	⬇️
tools/quantize/quant_utils.cpp	56.52% <0.00%> (-2.09%)	⬇️
tools/quantize/quant_tool_int8.cpp	45.18% <9.70%> (-19.13%)	⬇️
source/operator/prototype/unsqueeze.c	12.50% <0.00%> (-83.93%)	⬇️
source/operator/prototype/priorbox.c	14.00% <0.00%> (-82.00%)	⬇️
source/operator/prototype/gru.c	17.07% <0.00%> (-80.49%)	⬇️
source/operator/prototype/matmul.c	18.91% <0.00%> (-78.38%)	⬇️
source/operator/prototype/detection_output.c	18.91% <0.00%> (-78.38%)	⬇️
... and 202 more

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[BUG1989]

lgtm!