Add ESP-IDF .gitignore

[morusn]

from official esp-idf repository

Pull Request

Thank you for contributing to @toptal/gitignore and https://www.gitignore.io.

New or update

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New

• [x] Template - New .gitignore template
• [ ] Composition - Template made from smaller templates
• [x] Inheritance - Template similar to an existing template
• [ ] Patch - Template extending functionality of existing template

Update

• [ ] Template - Update existing .gitignore template

Details

Espressif Official repo with .gitignore removed things that are to be found in other .gitignore (IDE ignores etc) @filipechagas @alexmcode

[morusn]

@alexmcode @filipechagas Can I ask for a review?