Add plot_config to optional plot

freqtrade/templates/subtemplates/plot_config_full.j2

@@ -0,0 +1,18 @@
+
+plot_config = {
+    # Main plot indicators (Moving averages, ...)
+    'main_plot': {
+        'tema': {},
+        'sar': {'color': 'white'},
+    },
+    'subplots': {
+        # Subplots - each dict defines one additional plot
+        "MACD": {
+            'macd': {'color': 'blue'},
+            'macdsignal': {'color': 'orange'},
+        },
+        "RSI": {
+            'rsi': {'color': 'red'},
+        }
+    }
+}