Add SymbolRun to allow adding symbols inline

src/file/paragraph/run/symbol-run.ts

@@ -0,0 +1,20 @@
+import { IRunOptions, Run } from "./run";
+import { Symbol } from "./run-components/symbol";
+
+export interface ISymbolRunOptions extends IRunOptions {
+    readonly char: string;
+    readonly symbolfont?: string;
+}
+
+export class SymbolRun extends Run {
+    constructor(options: ISymbolRunOptions | string) {
+        if (typeof options === "string") {
+            super({});
+            this.root.push(new Symbol(options));
+            return;
+        }
+
+        super(options);
+        this.root.push(new Symbol(options.char, options.symbolfont));
+    }
+}