ValidatedQueries: start of validated queries API (#44731)

* adds an api endpoint for use with public dashboards that validates orgId, dashboard, and panel when running a query. This feature is in ALPHA and should not be enabled yet. Testing is based on new mock sqlstore.

Co-authored-by: Jesse Weaver <jesse.weaver@grafana.com>
Co-authored-by: Leandro Deveikis <leandro.deveikis@gmail.com>

pkg/components/simplejson/simplejson_test.go

@@ -45,6 +45,23 @@ func TestSimplejson(t *testing.T) {
 	awsval, _ = aws.GetIndex(1).Get("subkeythree").Int()
 	assert.Equal(t, 3, awsval)
 
+	arr := js.Get("test").Get("array")
+	assert.NotEqual(t, nil, arr)
+	val, ok := arr.CheckGetIndex(0)
+	assert.Equal(t, ok, true)
+	valInt, _ := val.Int()
+	assert.Equal(t, valInt, 1)
+	val, ok = arr.CheckGetIndex(1)
+	assert.Equal(t, ok, true)
+	valStr, _ := val.String()
+	assert.Equal(t, valStr, "2")
+	val, ok = arr.CheckGetIndex(2)
+	assert.Equal(t, ok, true)
+	valInt, _ = val.Int()
+	assert.Equal(t, valInt, 3)
+	_, ok = arr.CheckGetIndex(3)
+	assert.Equal(t, ok, false)
+
 	i, _ := js.Get("test").Get("int").Int()
 	assert.Equal(t, 10, i)