[lldb] Add PlatformWebInspectorWasm (#188751)
Add a new PlatformWebInspectorWasm, which is a Wasm platform that
automatically connects to the WebInspector platform server.
The existing "wasm" platform handles WebAssembly generally and allows
you to configure a runtime to launch under. The "webinspector-wasm"
platform does the inverse, and only supports attaching to an already
running WebAssembly instance in Safari. The workflow here is always
`platform process list` followed by `platform process attach`. This
explains why you can only force create this platform and it's never
automatically selected when loading a Wasm target.
