fix gf run custom arguments and gf gen dao specify config file path

[omegamt]

不知为何gf gen dao工具一直没有把指定配置路径选项完善一下, 不是很常用吗
https://goframe.org/pages/viewpage.action?pageId=3673173 的使用方式示例
gf gen dao -p ./model -c config.yaml -g user-center -t user,user_detail,user_login
-c 一直用不了, 短命令已被 DescriptionTag 占用了 short命令找不到合适的就用了cfg
以下测试没问题
gf gen dao -p ./src -cfg ./myconf/conf.toml

之前使用 gf run main.go --args "-www ./product debug true" 一直没法把参数传进去
经测试以下两运行方式接收到的参数一致
$ gf run main.go --args "-www ./product -debug true"
$ ./main -www ./product -debug true

[codecov-commenter]

Codecov Report

Merging #1879 (7ed4cae) into master (19779cd) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1879      +/-   ##
==========================================
+ Coverage   75.56%   75.57%   +0.01%     
==========================================
  Files         512      512              
  Lines       46373    46373              
==========================================
+ Hits        35041    35048       +7     
+ Misses       9328     9321       -7     
  Partials     2004     2004              

Flag	Coverage Δ
go-1.15-386	75.50% <ø> (+0.01%)	⬆️
go-1.15-amd64	75.43% <ø> (-0.04%)	⬇️
go-1.16-386	75.48% <ø> (+<0.01%)	⬆️
go-1.16-amd64	75.47% <ø> (ø)
go-1.17-386	75.51% <ø> (+0.03%)	⬆️
go-1.17-amd64	75.49% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
os/gfsnotify/gfsnotify_filefunc.go	74.02% <0.00%> (-3.90%)	⬇️
os/gcron/gcron_schedule.go	67.52% <0.00%> (+0.42%)	⬆️
container/gmap/gmap_hash_str_str_map.go	97.99% <0.00%> (+1.00%)	⬆️
os/gfsnotify/gfsnotify_watcher_loop.go	83.19% <0.00%> (+2.52%)	⬆️
os/gfile/gfile_scan.go	85.55% <0.00%> (+3.33%)	⬆️

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