Adds support for function docs in hover

[TwitchBronBron]

This shows the function documentation comments when hovering over a function.

Here's an example:

All comments will be parsed as markdown.

[TwitchBronBron]

This was forcing all hovers to be brightscript...but we need to support any documentation information provided, so force the underlying files to provide the full markdown text instead of casting it all here.

[livecano]

@TwitchBronBron, does the documentation has to be in a specific format? do you have a code snippet with a sample?

[TwitchBronBron]

@livecano as of right now, it just reads every comment statement between functions. For example:

'I'm shown for one()
sub one()
end sub
' I'm shown for two()
' I'm shown also for two()

'I'm shown for two() as well
sub two()
end sub

[livecano]

Looks good!