Cleanup type symbol usage by consolidating to manage in one spot. This makes them easier to use as well by providing a single rollup of all the common type symbol's used throughout core.
original pr credit to @farfromrefug
https://github.com/NativeScript/NativeScript/pull/8519
BREAKING CHANGE
Long standing inconsistency with color handling here.
BEFORE:
```
// #aarrggbb
const color = new Color('#ff00ff00');
Label {
background-color: #ff00ff00;
}
```
AFTER:
```
// #rrggbbaa
const color = new Color('#00ff00ff');
Label {
background-color: #00ff00ff;
}
```
