#215 Add extras_require for optional installation in setup.py

[Only-bottle]

Description

Please include a summary in English, of the changes in this pull request. If it closes an issue, please mention it here.

The minimal option will not install netspresso_trainer. If you want to use the minimal option, install it like this.

pip install netspresso[minimal]

Closes: #215

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Change(s)

• Add extras_require for optional installation in setup.py

[Only-bottle]

This feature will be included in the v1.4.0 release!

cc. @illian01 @deepkyu