Enhancement(web-serial): Enable Serial Options During Port Initialization

[RushikeshPatange]

What Does This PR Do ?

• Add support for serialOptions other than baudRate that can be provided to port.open()/device.open() method while opening the port/connecting the device.
• This PR may address Provide Support For All SerialOptions While Opening Port Of Device (Web Serial API) #114

@brianignacio5 Could you please take a look into this ?

[balloob]

Since you're already able to pass in a port, is this PR still necessary? You can create/configure your port accordingly before passing it to esptool.

[adwait-esp]

Since you're already able to pass in a port, is this PR still necessary? You can create/configure your port accordingly before passing it to esptool.

With reference to the Weberial API Documentation - the SerialPort open method supports SerialOptions dictionary. https://wicg.github.io/serial/#serialoptions-dictionary.

We currently support passing only baudrate, where as other options would come handy as well. This PR still maintains baudrate as primary parameter (to preserve compatibility and not introduce any breaking changes). However we can phase it out later and make use of serialoptions dict to be passed instead in future.

[brianignacio5]

LGTM.

I think we could probably remove transport from LoaderOptions and add baud rate as required in SerialOptions to simplify later. For a next major or minor version release.