Add metadata to app for fdroid submission

[elenavolpato]

[here] (https://gitlab.com/fdroid/fdroidclient/-/tree/master/metadata/en-US) is an example of the metadata submission

1. metadata/en-US/short_description.txt (30-50 chars, no trailing dot): Plan your groceries knowing when it's best to buy your local produce in Italy.

2. metadata/en-US/full_description.txt
The Season Food App is designed to track the seasonal availability of fruits and vegetables. Users can identify in-season produce for the current month and find optimal purchasing times for specific items. The app's interface displays recommended items each month, aiding users in selecting locally available and flavorful choices. The search function allows users to find best purchase times for desired items. By promoting in-season produce consumption, the app indirectly supports local farming and reduces environmental impact. Overall, the Season Food App helps users make informed decisions for sustainable and fresh food choices.

4. metadata/en-US/images/icon.png
Get it from the repository

5. metadata/en-US/images/phoneScreenshots/screenshot.png
wait for google screenshots