[expotools] Move publishing action to end of ppt (#18196)

* [expotools] Move publishing action to end of ppt

Why

After this change, `npm publish` commands in `publish-project-templates` will o

[expotools] Move publishing action to end of ppt (#18196)

* [expotools] Move publishing action to end of ppt

Why

After this change, `npm publish` commands in `publish-project-templates` will only be executed at the end of the script, and only after the user confirms their intent.

How

Flow is modified to build up an array of commands to be executed, and then they are executed all at once at the end of the script.

Generally useful new module `askAreYouSureAsync.ts` is added to the `utils` folder.

Test Plan

Tested locally in dry run mode.

* Remove unused code

Co-authored-by: Tomasz Sapeta <[email protected]>

Co-authored-by: Tomasz Sapeta <[email protected]>

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