requirements: Add notes about search result requirements for console apps

Author: bbhtt

docs/02-for-app-authors/02-requirements.md

@@ -185,6 +185,8 @@ used by other distributions as well.
 All submissions must provide a [Metainfo file](/docs/for-app-authors/metainfo-guidelines/#path-and-filename)
 that passes [validation](/docs/for-app-authors/metainfo-guidelines/#validation).
 
+A Metainfo file is mandatory to appear on the Flathub website.
+
 Metainfo file is optional for runtimes, extensions and baseapps.
 
 ### Desktop file
@@ -198,7 +200,8 @@ Desktop file is optional for console applications.
 Graphical applications must provide, preferably a SVG icon or at least
 a 256x256 PNG icon, properly [named and installed](https://docs.flatpak.org/en/latest/conventions.html#application-icons).
 
-Icon is optional for console applications.
+Icon is optional for console applications but it is mandatory to appear
+on Flathub website search results.
 
 ## Permissions
 

docs/02-for-app-authors/03-metainfo-guidelines/index.md

@@ -452,6 +452,9 @@ to the [proper location](https://docs.flatpak.org/en/latest/conventions.html#app
 and must also have a [launchable](#launchable) entry so that  `appstreamcli compose`
 can fetch the icon from the desktop file.
 
+Console applications wanting to appear in Flathub website search results
+must also provide icons.
+
 Console applications wanting to set icons for application stores, can
 also [install icons](https://docs.flatpak.org/en/latest/conventions.html#application-icons).
 If icons are installed an `icon` tag with `type=stock` can be used. The
@@ -540,6 +543,9 @@ All graphical applications must have one or more screenshots in the
 MetaInfo. Please make sure to follow the [quality guidelines](/docs/for-app-authors/metainfo-guidelines/quality-guidelines#screenshots)
 for screenshots.
 
+Console applications wanting to appear in Flathub website search results
+must provide screenshots.
+
 The link inside `image` tag must be a direct link to a image resource on
 the web. If the images are hosted in a git repository, the
 link should be from a tag or a commit and not a branch.