fix: write .gitnore files for scaffolding

[vigneshshanmugam]

• fix Synthetics init fails because templates weren't included in distributable #509
• We update the .gitignore contents if the init is called on an existing directory and override it instead of using it from the templates directory.

[apmmachine]

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• Start Time: 2022-05-24T17:42:56.880+0000

• Duration: 12 min 17 sec

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[lucasfcosta]

@vigneshshanmugam I did just test again locally and it works. I've also checked NPM docs to be sure that the root cause analysis was 100% correct.

I also found this: npm/npm#3763. Apparently we could also just add an .npmignore to prevent the .gitignore from being moved as .npmignore.

However, the ultimate test here would be to deploy that to NPM and check whether it works there too 😄 Can we do a release under a beta tag to try this one out btw?

[lucasfcosta]

It's funny that the template .gitignore was ignored itself and thus we had this bug 😆

[vigneshshanmugam]

Exactly :lol , which is why I am not using the file from here and instead writing when setting up the package which would eliminate the dependency on the NPM letting us use dot files.

[vigneshshanmugam]

However, the ultimate test here would be to deploy that to NPM and check whether it works there too 😄 Can we do a release under a beta tag to try this one out btw?

We publish everything under beta as we are in the Beta stage. So should be good here.