ultralight-go

Initial work to implement Go bindiongs for Ultralight (https://github.com/ultralight-ux/ultralight).

For now this requires a few manual steps:

Get a recent version of the Ultralight SDK. Best option for now is to clone the Ultralight repository and build it locally.
Copy/link the Ultralight SDK in this folder. If you built locally, the SDK is in {repo}/build/SDK.
Enable setting additional CGO LDFLAGS (at least for MacOS):
```
export CGO_LDFLAGS_ALLOW=-Wl,-rpath.*
```
Run example:
```
go run examples/resize.go
```
Run browser:
```
cd examples/browser; make 
./browser
```
The browser needs the HTML assets in examples/browser/assets and expects them in the current directory, so you need to "cd" in there.

It also expects the SDK to be in the current directy, so the Makefile creates a link.

raff/ultralight-go