Add methods for plotting charts, including subplots

plot.py

@@ -0,0 +1,32 @@
+from chart import Chart
+from plotly.graph_objects import Figure
+from plotly.subplots import make_subplots
+from typing import List
+
+def plot_with_subplots(subplots: List[List[Chart]]) -> Figure:
+    num_rows = len(subplots)
+    num_columns = len(subplots[0])
+
+    figure = make_subplots(rows = num_rows, cols = num_columns)
+
+    for i, row in enumerate(subplots, start = 1):
+        for j, chart in enumerate(row, start = 1):
+            figure.add_trace(chart.trace(), row = i, col = j)
+            figure.update_xaxes(showgrid = False, showticklabels = True, rangeslider = dict(visible = False), row = i, col = j)
+            figure.update_yaxes(showgrid = False, side = 'right', row = i, col = j)
+
+    # TODO: Make this configurable.
+    figure.update_layout(
+        paper_bgcolor = '#0f0f0f',
+        plot_bgcolor = '#0f0f0f',
+        font_color = '#7a7c7d',
+        showlegend = False,
+        margin = dict(
+            pad = 15
+        )
+    )
+
+    return figure
+
+def plot(chart: Chart) -> Figure:
+    return plot_with_subplots([[chart]])