Remove all internal usage of the Json types

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/config-schema/package.json

@@ -26,6 +26,7 @@
     "@backstage/core-plugin-api": "^0.1.11",
     "@backstage/errors": "^0.1.3",
     "@backstage/theme": "^0.2.11",
+    "@backstage/types": "^0.1.1",
     "@material-ui/core": "^4.12.2",
     "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "4.0.0-alpha.57",

plugins/config-schema/src/components/SchemaView/ChildView.tsx

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { JsonValue } from '@backstage/config';
+import { JsonValue } from '@backstage/types';
 import { Box, Chip, Divider, makeStyles, Typography } from '@material-ui/core';
 import { Schema } from 'jsonschema';
 import React, { useEffect, useRef } from 'react';

plugins/config-schema/src/components/SchemaView/MetadataView.tsx

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { JsonValue } from '@backstage/config';
+import { JsonValue } from '@backstage/types';
 import {
   Paper,
   Table,