Added linegraph component

src/Components/Graphs/Subreddit_Graph/subredditLineGraph.js

+import React from 'react'
+import {
+  ResponsiveContainer,
+  LineChart,
+  Tooltip,
+  XAxis,
+  YAxis,
+  Line,
+  LabelList,
+  Label
+} from "recharts";
+
+// const tooltipPayload = (data) => {
+//   const tooltipArray = []
+//   data.forEach(element => {
+//     tooltipArray.push(
+//     {hour: "Hour : " + element['hour'],
+//     frequency: element['frequency']}
+//     )
+//   });
+//   console.log(tooltipArray)
+//   return tooltipArray
+// }
+
+
+const SubredditLineGraph = (props) => (
+  <ResponsiveContainer width="100%" height={500}>
+    <LineChart data={props.data}>
+      <XAxis
+      height={50}
+      dataKey="hour"
+        tick={true}
+        label={{ value: "UTC Time (Hours)", position: "insideBottom", offset: "0" }}
+      />
+      <YAxis width={100}>
+        <Label angle={270} value={props.yLabel} />
+      </YAxis>
+
+      <Line dataKey={props.dataKey} fill="#8884d8" type={'natural'}>
+        <LabelList dataKey="label" position="bottom" angle="0" offset={10} fill="black" />
+      </Line>
+    </LineChart>
+  </ResponsiveContainer>
+);
+
+
+export {SubredditLineGraph};