[change] Update Touchable components

Reference RN 0.60 implementations with web-specific fixes

Ref #1172
Fix #1105

Author: necolas

.eslintrc

@@ -34,6 +34,7 @@
     "window": false,
     // Flow global types,
     "$Enum": false,
+    "$ReadOnly": false,
     "CSSStyleSheet": false,
     "HTMLInputElement": false,
     "ReactClass": false,

.flowconfig

@@ -5,6 +5,7 @@
 <PROJECT_ROOT>/.*/__tests__/.*
 <PROJECT_ROOT>/packages/.*/dist/.*
 <PROJECT_ROOT>/packages/examples/.*
+<PROJECT_ROOT>/packages/react-native-web/src/vendor/.*
 <PROJECT_ROOT>/packages/website/.*
 .*/node_modules/babel-plugin-transform-react-remove-prop-types/*