Remove src dts files and correct exports

Esbuild doesn't appear to play nice with dts files and when they are regular ts
files they require the exports

src/browser/Types.ts

@@ -129,7 +129,7 @@ export interface ILinkifier2 extends IDisposable {
   readonly currentLink: ILinkWithState | undefined;
 }
 
-interface ILink {
+export interface ILink {
   range: IBufferRange;
   text: string;
   decorations?: ILinkDecorations;
@@ -139,17 +139,17 @@ interface ILink {
   dispose?(): void;
 }
 
-interface ILinkDecorations {
+export interface ILinkDecorations {
   pointerCursor: boolean;
   underline: boolean;
 }
 
-interface IBufferRange {
+export interface IBufferRange {
   start: IBufferCellPosition;
   end: IBufferCellPosition;
 }
 
-interface IBufferCellPosition {
+export interface IBufferCellPosition {
   x: number;
   y: number;
 }