[Feature Request] Allow customization of the placeholder field for a password input in dynamic parameters

[Lordmau5]

Describe the solution you'd like
The https://github.com/crowbartools/Firebot/blob/master/src/gui/app/directives/controls/dynamic-parameter.js#L37 password field / option should support letting the script developer set a custom placeholder value similar to how it's done for the number and searchable select inputs.

Additional context
This would allow using a password field for e.g. API keys while both preventing a potential leak when screensharing to users (either on stream or for technical help) while also setting the placeholder to for example Enter API key instead of Enter password, hopefully preventing confusion for the end user as well ("Do I have to put in my login password or my API key into this field?")

Extra info:
Perhaps this could also be considered for the string input for similar reasons? (More clarity to the user on what to enter into the field)
https://github.com/crowbartools/Firebot/blob/master/src/gui/app/directives/controls/dynamic-parameter.js#L32-L33