chore: Update wasm-tools-go location

[lxfontes]

This means our examples / docs have to be updated to use go.bytecodealliance.org for go:generate.

Updating go:generate requires user interaction so lets do our best to not have to do it again.
In a follow-up PR we will abstract the upstream wit-bindgen-go command within this package, so users will use go.wasmcloud.dev/component/codegen.

Before

component-sdk-go ❯ ag 'wasm-tools-go' | wc -l
     272

After

component-sdk-go ❯ ag 'wasm-tools-go' | wc -l
       3

component-sdk-go ❯ ag 'wasm-tools-go'
_examples/http-server/go.mod
13:	github.com/bytecodealliance/wasm-tools-go v0.3.0 // indirect

_examples/http-server/go.sum
1:github.com/bytecodealliance/wasm-tools-go v0.3.0 h1:9aeDFYpbi3gtIW/nJCH+P+LhFMqezGoOfzqbUZLadho=
2:github.com/bytecodealliance/wasm-tools-go v0.3.0/go.mod h1:VY+9FlpLi6jnhCrZLkyJjF9rjU4aEekgaRTk28MS2JE=

Remaining mentions to wasm-tools-go will go away once we update wadge.