Add support for automatic indenting when formatting

[isc-bsaviano]

For example,

From

for value = "Red","Green","Blue" {
write value, !
}

To

For value = "Red","Green","Blue" {
   Write value, !
}

Originally reported as intersystems-community/vscode-objectscript#1254

[cvertee]

For the love of god... PLEASE let the user choose whether he wants to Uppercase first letters of commands or not. Lowercase everything is literally an industry standard in every language ever, PLEASE don't ruin the standard and hundreds of codebases, we already have ##class syntax for that 💀

[isc-bsaviano]

@cvertee That's a configurable setting: intersystems.language-server.formatting.commands.case. Documentation for all settings can be found here.

[cvertee]

@isc-bsaviano oh, ok, thanks!