Add FlexMeasures plugins, USEF protocol, and Cariflex simulator

- flexmeasures-entsoe: ENTSO-E data plugin
- flexmeasures-weather: Weather data plugin
- USEF Flex Trading Protocol PDF (2.4MB)
- Cariflex simulator (publishes to Redis)
- Dashboard Grafana updated with correct InfluxDB queries
- All tools extracted in /tools/

tools/flexmeasures-weather/flexmeasures_weather/utils/filing.py

@@ -0,0 +1,25 @@
+import os
+
+import click
+from flask import Flask, current_app
+
+from flexmeasures_weather import DEFAULT_FILE_PATH_LOCATION
+
+
+def make_file_path(app: Flask, region: str) -> str:
+    """Ensure and return path for weather data"""
+    file_path = current_app.config.get(
+        "WEATHER_FILE_PATH_LOCATION", DEFAULT_FILE_PATH_LOCATION
+    )
+    data_path = os.path.join(app.root_path, file_path)
+    if not os.path.exists(data_path):
+        click.echo("[FLEXMEASURES-WEATHER] Creating %s ..." % data_path)
+        os.mkdir(data_path)
+    # optional: extend with subpath for region
+    if region is not None and region != "":
+        region_data_path = "%s/%s" % (data_path, region)
+        if not os.path.exists(region_data_path):
+            click.echo("[FLEXMEASURES-WEATHER] Creating %s ..." % region_data_path)
+            os.mkdir(region_data_path)
+        data_path = region_data_path
+    return data_path