new: [minecraft] support of ``whitelist`` option

minecraft/hooks/init

@@ -22,4 +22,8 @@ minecraft:init-binary "$version"
 threads=$(options-get threads) || exit 1
 mem=$(options-get mem) || exit 1
 
-minecraft:init-command "$threads" "$mem"
+minecraft:init-command "$threads" "$mem"
+
+
+whitelist=$(options-get whitelist) || true
+minecraft:make-whitelist "$whitelist"

minecraft/lib/common

@@ -36,4 +36,16 @@ $SERVICE_NAME:
   - nogui
 "
     echo "eula=TRUE" > "$SERVICE_DATASTORE/${MINECRAFT_DATA}/eula.txt"
+}
+
+
+minecraft:make-whitelist() {
+    local whitelist="$1"
+
+    {
+        e "$whitelist" |
+            yq -o=json \
+               'to_entries | map({"uuid": .key, "name": .value})'
+    } > "$SERVICE_DATASTORE/${MINECRAFT_DATA}/whitelist.json"
+
 }