refine power generation presets (#624)

* add values of the "generator:method" tag

https://wiki.openstreetmap.org/w/index.php?title=Key:generator:method&oldid=2315464

* add strings for power generation sources and method

and refine some presets accordingly

data/fields/plant/method.json

@@ -1,5 +1,7 @@
 {
     "key": "plant:method",
     "type": "combo",
-    "label": "Generation Method"
+    "label": "Generation Method",
+    "stringsCrossReference": "{generator/method}",
+    "autoSuggestions": false
 }

data/fields/plant/method/hydro.json

@@ -0,0 +1,16 @@
+{
+    "key": "plant:method",
+    "type": "combo",
+    "label": "{plant/method}",
+    "stringsCrossReference": "{generator/method}",
+    "options": [
+        "water-storage",
+        "water-pumped-storage",
+        "run-of-the-river"
+    ],
+    "autoSuggestions": false,
+    "prerequisiteTag": {
+        "key": "plant:source",
+        "value": "hydro"
+    }
+}

data/fields/plant/method/solar.json

@@ -0,0 +1,15 @@
+{
+    "key": "plant:method",
+    "type": "combo",
+    "label": "{plant/method}",
+    "stringsCrossReference": "{generator/method}",
+    "options": [
+        "thermal",
+        "photovoltaic"
+    ],
+    "autoSuggestions": false,
+    "prerequisiteTag": {
+        "key": "plant:source",
+        "value": "solar"
+    }
+}

data/fields/plant/method/waste.json

@@ -0,0 +1,15 @@
+{
+    "key": "plant:method",
+    "type": "combo",
+    "label": "{plant/method}",
+    "stringsCrossReference": "{generator/method}",
+    "options": [
+        "combustion",
+        "gasification"
+    ],
+    "autoSuggestions": false,
+    "prerequisiteTag": {
+        "key": "plant:source",
+        "value": "waste"
+    }
+}

data/fields/plant/output.json

@@ -0,0 +1,18 @@
+{
+    "key": "plant:output",
+    "type": "multiCombo",
+    "label": "Form of Power Output",
+    "strings": {
+        "options": {
+            "electricity": "Electricity",
+            "hot_water": "Hot Water",
+            "hot_air": "Hot Air",
+            "cold_water": "Cold Water",
+            "cold_air": "Cold Air",
+            "compressed_air": "Compressed Air",
+            "steam": "Steam",
+            "vacuum": "Vacuum"
+        }
+    },
+    "autoSuggestions": false
+}

data/fields/plant/output/electricity.json

@@ -1,7 +1,11 @@
 {
     "key": "plant:output:electricity",
     "type": "typeCombo",
-    "label": "Power Output",
+    "label": "Electric Power Output",
     "placeholder": "500 MW, 1000 MW, 2000 MW...",
-    "snake_case": false
+    "snake_case": false,
+    "prerequisiteTag": {
+        "key": "plant:output:electricity",
+        "valueNot": "no"
+    }
 }

data/fields/plant/source.json

@@ -1,5 +1,6 @@
 {
     "key": "plant:source",
     "type": "combo",
-    "label": "Energy Source"
+    "label": "Energy Source",
+    "stringsCrossReference": "{generator/source}"
 }