Add new chart types and dashboard component interfaces

Common/Types/Dashboard/Chart/ChartType.ts

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+type ChartType = "line" | "bar"; // | "pie" | "doughnut" | "radar" | "polarArea" | "bubble" | "scatter";
+
+export default ChartType;

Common/Types/Dashboard/ComponentPosition.ts

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+export default interface ComponentPosition {
+  topInDashboardUnits: number;
+  leftInDashboardUnits: number;
+}

Common/Types/Dashboard/ComponentSize.ts

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+export default interface ComponentSize {
+  widthInDashboardUnits: number; // this is in dashboard units
+  heightInDashboardUnits: number; // this is in dashboard units
+}

Common/Types/Dashboard/DashboardComponents/BaseComponent.ts

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+import ObjectID from "../../ObjectID";
+
+export default interface BaseComponent {
+  type: string;
+  componentId: ObjectID;
+}

Common/Types/Dashboard/DashboardComponents/ChartDashboardComponent.ts

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+import ObjectID from "../../ObjectID";
+import ChartType from "../Chart/ChartType";
+import BaseComponent from "./BaseComponent";
+
+export default interface ChartDashboardComponent extends BaseComponent {
+  type: "chart";
+  componentId: ObjectID;
+  chartType: ChartType;
+}

Common/Types/Dashboard/DashboardComponents/ValueDashboardComponent.ts

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+import BaseComponent from "./BaseComponent";
+
+export interface ValueDashboardComponent extends BaseComponent {}