module and ts

[Caesar-ch]

1. use ts refactoring init-agent-script.js code
2. module manage agent code
3. issue #136

[CLAassistant]

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[huan]

Please make sure the following requirements have been met for your PR before we can continue reviewing it:

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[atorber]

Please make sure the following requirements have been met for your PR before we can continue reviewing it:

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2. The PR has passed all the CI tests and turns green. (you can execute all tests locally by running npm test)

I'm sorry. This is an incorrect merge. It's my error and has been rolled back. Dear @Caesar-ch ,please take a moment to check it and submit it again after making sure there are no problems.