Fix some small issues

[vonagam]

• json and liveJsonData variables in getLiveJsonProps were missing declaration specifier. The code was not working in strict mode.

• Svelte was complaining about compilerOptions.css being boolean in the client config, set it to corresponding proper string value - injected.

• hydrate should be true only if there was ssr involved, was getting errors about it, added data-ssr attribute to indicate server rendering.

• other stuff is just cosmetics, making things consistent.

[vonagam]

• In LiveSvelte.Components.get_svelte_components do not do search subdirectories since currently only top level svelte components are actually supported (in name_to_function there is no expectation for name to include a directory, only a basename is used, meaning that component name prop will be wrong as it should include a full path), also removes need to filter out _build folder. Can undo this change and add support for nested ones, it will expect that all components should have different basenames.

[woutdp]

Thanks for the changes/fixes!

The get_svelte_components function has an error in it though, fn doesn't end with end. The other changes look good :)

[vonagam]

Added end.

[woutdp]

Available in version 0.10.1