[IDEA] Developer mode timer extender

[mariotaku]

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• No apps related to piracy or intellectual property infringement is allowed.
• We can't guarantee if the app will be developed by anyone.
• We encourage you to develop the app by yourself. This would be a great contribution to webOS homebrew community.

• I understand conditions above
• (Optional) I'd like to develop this app by myself

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An app to submit developer mode token to a server, and let it periodically renew the developer mode timer. webosapp.club has already done such job, and we should consider to build one too.