add File write toolkit

[subway-jack]

Description

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• I have updated the tests accordingly (required for a bug fix or a new feature)
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• I have added examples if this is a new feature

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[Wendong-Fan]

hey @subway-jack and @fengju0213 , could you open the PR by creating a new branch in camel instead of fork the repo, so that core maintainer could modify the code directly~

[fengju0213]

hey @subway-jack and @fengju0213 , could you open the PR by creating a new branch in camel instead of fork the repo, so that core maintainer could modify the code directly~

OK，i will take it