chore: add geojson types to terra-draw example

[JamesLMilner]

At the moment if you try to run npm run start after running npm install in the map-drawing-terradraw sample it fails with the following TypeScript compilation error:

> @js-api-samples/map-drawing-terradraw@1.0.0 start
> tsc && vite build --base './' && vite

../../node_modules/terra-draw/dist/common.d.ts:1:47 - error TS2307: Cannot find module 'geojson' or its corresponding type declarations.

1 import { LineString, Polygon, Position } from "geojson";
                                                ~~~~~~~~~
../../node_modules/terra-draw/dist/modes/pixel-distance.behavior.d.ts:3:26 - error TS2307: Cannot find module 'geojson' or its corresponding type declarations.

3 import { Position } from "geojson";
                           ~~~~~~~~~
../../node_modules/terra-draw/dist/modes/select/behaviors/coordinate-point.behavior.d.ts:1:33 - error TS2307: Cannot find module 'geojson' or its corresponding type declarations.

1 import { Point, Position } from "geojson";
                                  ~~~~~~~~~
../../node_modules/terra-draw/dist/modes/select/behaviors/midpoint.behavior.d.ts:1:33 - error TS2307: Cannot find module 'geojson' or its corresponding type declarations.

1 import { Point, Position } from "geojson";
                                  ~~~~~~~~~
../../node_modules/terra-draw/dist/modes/select/behaviors/selection-point.behavior.d.ts:1:54 - error TS2307: Cannot find module 'geojson' or its corresponding type declarations.

1 import { LineString, Point, Polygon, Position } from "geojson";
                                                       ~~~~~~~~~
../../node_modules/terra-draw/dist/store/store.d.ts:1:53 - error TS2307: Cannot find module 'geojson' or its corresponding type declarations.

1 import { Feature, Point, Polygon, LineString } from "geojson";
                                                      ~~~~~~~~~
../../node_modules/terra-draw/dist/terra-draw.d.ts:16:26 - error TS2307: Cannot find module 'geojson' or its corresponding type declarations.

16 import { Position } from "geojson";
                            ~~~~~~~~~

Found 7 errors in 7 files.

Errors  Files
     1  ../../node_modules/terra-draw/dist/common.d.ts:1
     1  ../../node_modules/terra-draw/dist/modes/pixel-distance.behavior.d.ts:3
     1  ../../node_modules/terra-draw/dist/modes/select/behaviors/coordinate-point.behavior.d.ts:1
     1  ../../node_modules/terra-draw/dist/modes/select/behaviors/midpoint.behavior.d.ts:1
     1  ../../node_modules/terra-draw/dist/modes/select/behaviors/selection-point.behavior.d.ts:1
     1  ../../node_modules/terra-draw/dist/store/store.d.ts:1
     1  ../../node_modules/terra-draw/dist/terra-draw.d.ts:16

This PR adds in the necessary geojson types required to allow the command to run correctly.

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