feat(supported-versions): add release date (#100)

Previously, we didn't take into account a release date, which meant
that @vinai could not add MageOS or Magento releases before the actual
day of release.

With this, we can now add the releases to supported verisons before
a release comes out, allowing us to make a kind that allows testing
MageOS and Magento Mirror releases more quickly.

supported-version/src/kind/get-currently-supported.ts

@@ -3,5 +3,9 @@ import allVersions from '../versions/individual.json';
 
 export const getCurrentlySupportedVersions = (date: Date): string[] => 
         Object.entries(<Record<string,MagentoMatrixVersion>>allVersions)
-                .filter(([key, value]) => new Date(value.eol) >= date)
+                .filter(([key, value]) => {
+                        const dayAfterRelease = new Date(value.release);
+                        dayAfterRelease.setDate(dayAfterRelease.getDate() + 1);
+                        return date >= dayAfterRelease && new Date(value.eol) >= date;
+                })
                 .map(([key, value]) => key);