reorg test files

Author: ibgreen

test/modules/json/utils/expression-eval.spec.ts renamed to test/modules/json/expression-eval/expression-eval.spec.ts

@@ -3,7 +3,7 @@
 // Copyright (c) vis.gl contributors
 
 import test from 'tape-promise/tape';
-import {compile, compileAsync, addUnaryOp, addBinaryOp} from '@deck.gl/json/utils/expression-eval';
+import {compile, compileAsync, addUnaryOp, addBinaryOp} from '@deck.gl/json/expression-eval/expression-eval';
 
 const fixtures = [
   // array expression

test/modules/json/index.ts

@@ -2,7 +2,8 @@
 // SPDX-License-Identifier: MIT
 // Copyright (c) vis.gl contributors
 
-import './utils/expression-eval.spec';
+import './expression-eval/expression-eval.spec';
+
 import './utils/get.spec';
 import './utils/shallow-equal-objects.spec';