Ark: Move away from R startup pass through of `--` towards explicit CLI arguments that we support

Right now, ark has an argument "pass through" method of -- that passes on any command line arguments to R

In Positron we set a few, like --interactive and --quiet and --no-restore-data, but the user has a chance to set some too:

This is actually absolutely not working as intended right now. On Windows, we aren't even passing these arguments through to R's cmdlinearg utility
https://github.com/posit-dev/ark/blob/d6ab389bb828db56850948f10b27e3161285be47/crates/ark/src/sys/windows/interface.rs#L55-L56

But here's the thing, I don't think we should. In RStudio, there is no option to just pass whatever flags you want through to R. RStudio exposes a UI to set blessed options, and then it does whatever internal magic is needed to mimic things like --no-init-file (which would be to set pRP->LoadInitFile = loadInitFile ? TRUE : FALSE, not to pass --no-init-file through to R directly).

This is a good thing because it would put ark in control over the limited set of blessed options you can tweak while starting R. For example, we'd never want anyone to pass -e to run a single expression and then exit.

Here is the set of ark options

--connection_file
--startup-file
--session-mode
--no-capture-streams
--version
--log
--install
--help

I think we should also add this explicit set of R options instead of --

--r-quiet

# These default to TRUE like R, so the flag name is `no`
--r-no-init-file
--r-no-site-file
--r-no-environ

# I vote we default these to FALSE internally, unlike R,
# which means we also remove the `"no"` from their R option name
--r-save
--r-restore-data
--r-restore-history

# Advanced user customization, sometimes for workbench / security
--r-max-connections=N
--r-max-ppsize=N
--r-min-nsize=N
--r-min-vsize=N

# Special, but common
# We would already _default_ to no-save, no-restore, so this would practically
# add no-init-file, no-site-file, no-environ
--r-vanilla

That is the complete list of what I think we should add as explicit options out of this set from R's help page:

Options:
  -h, --help            Print short help message and exit
  --version             Print version info and exit
  --encoding=ENC        Specify encoding to be used for stdin
  --encoding ENC
  RHOME			Print path to R home directory and exit
  --save                Do save workspace at the end of the session
  --no-save             Don't save it
  --no-environ          Don't read the site and user environment files
  --no-site-file        Don't read the site-wide Rprofile
  --no-init-file        Don't read the user R profile
  --restore             Do restore previously saved objects at startup
  --no-restore-data     Don't restore previously saved objects
  --no-restore-history  Don't restore the R history file
  --no-restore          Don't restore anything
  --vanilla		Combine --no-save, --no-restore, --no-site-file,
			--no-init-file and --no-environ
  --no-readline         Don't use readline for command-line editing
  --max-connections=N   Set max number of connections to N
  --max-ppsize=N        Set max size of protect stack to N
  --min-nsize=N         Set min number of fixed size obj's ("cons cells") to N
  --min-vsize=N         Set vector heap minimum to N bytes; '4M' = 4 MegaB
  -q, --quiet           Don't print startup message
  --silent              Same as --quiet
  -s, --no-echo         Make R run as quietly as possible
  --interactive         Force an interactive session
  --verbose             Print more information about progress
  -d, --debugger=NAME   Run R through debugger NAME
  --debugger-args=ARGS  Pass ARGS as arguments to the debugger
  -g TYPE, --gui=TYPE	Use TYPE as GUI; possible values are 'X11' (default)
			and 'Tk'.
  --arch=NAME		Specify a sub-architecture
  --args                Skip the rest of the command line
  -f FILE, --file=FILE  Take input from 'FILE'
  -e EXPR               Execute 'EXPR' and exit

Start with crates/ark/src/sys/windows/interface.rs around lines 55-56 and compare the existing -- pass-through behavior with the proposed explicit Ark and R options. Trace how command-line arguments reach R, then define completion as supporting the listed explicit options without accepting arbitrary pass-through flags, including the documented R startup settings.