converter: add feature detection for --batch-size

[hangvane]

1. Change the way to detect features by checking help message of nydus-image create -h.
2. Add feature detection for --batch-size to keep compatibility with old versions of nydus-image.

For old versions of nydus-image:

runner@nyd:~/work/image-service/image-service$ sudo contrib/nydusify/cmd/nydusify convert --source dockerhub.kubekey.local/nydus/node:19-alpine --target dockerhub.kubekey.local/nydus/node:19-alpine-nydus-batch-1M --target-insecure --source-insecure --batch-size 0x100000 log-level trace
INFO[2023-06-06T12:43:00+08:00] pulling image dockerhub.kubekey.local/nydus/node:19-alpine  module=converter
INFO[2023-06-06T12:43:04+08:00] pulled image dockerhub.kubekey.local/nydus/node:19-alpine, elapse 3.254672243s  module=converter
INFO[2023-06-06T12:43:04+08:00] converting image dockerhub.kubekey.local/nydus/node:19-alpine  module=converter
WARN[2023-06-06T12:43:04+08:00] the feature '--type tar-rafs' is ignored, it requires higher version of nydus-image 
WARN[2023-06-06T12:43:04+08:00] the feature '--batch-size' is ignored, it requires higher version of nydus-image 
INFO[2023-06-06T12:43:06+08:00] converted image dockerhub.kubekey.local/nydus/node:19-alpine-nydus-batch-1M, elapse 2.330174644s  module=converter
INFO[2023-06-06T12:43:06+08:00] pushing image dockerhub.kubekey.local/nydus/node:19-alpine-nydus-batch-1M  module=converter
INFO[2023-06-06T12:43:06+08:00] pushed image dockerhub.kubekey.local/nydus/node:19-alpine-nydus-batch-1M, elapse 129.367187ms  module=converter
runner@nyd:~/work/image-service/image-service$ nydus-image --version
Version:        v2.1.6-5-g3454dc04
Git Commit:     3454dc04d5044c1bdee45d8259b391d4e4f0f6a2
Build Time:     2023-06-06T04:41:09.784423847Z
Profile:        release
Rustc:          rustc 1.61.0 (fe5b13d68 2022-05-18)

This PR is related to #482

[codecov]

Codecov Report

Merging #489 (536b5c8) into main (8fc731a) will increase coverage by 0.47%.
The diff coverage is 87.30%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #489      +/-   ##
==========================================
+ Coverage   37.31%   37.78%   +0.47%     
==========================================
  Files          59       59              
  Lines        6960     6979      +19     
==========================================
+ Hits         2597     2637      +40     
+ Misses       4052     4031      -21     
  Partials      311      311              

Impacted Files	Coverage Δ
pkg/converter/tool/builder.go	0.00% <0.00%> (ø)
pkg/converter/tool/feature.go	89.85% <88.70%> (+45.85%)	⬆️

[imeoer]

LGTM, thanks.