Create manifest.json

[Joemnewton]

Creating the package folder and manifest.json for the Reminder Notifications plugin.

Submit a new Plugin to Marketplace

Plugin Github repo URL: https://github.com/Joemnewton/logseq-reminder-notifications

Github releases checklist

• [ x] a legal package.json file.
• [ x] a valid CI workflow build action for Github releases. (theme plugin for this).
• [ x] a release which includes a release zip pkg from a successful build.
• [ x] a clear README file, ideally with an image or gif showcase. (For more friendly to users, it is recommended to have English version description).
• [ x] a license in the LICENSE file.