lots of misc connection refactoring / fixes:
* adds blocklogger as a way to writing logging information from the backend directly to the a terminal block
* use blocklogger in conncontroller
* use blocklogger in sshclient
* fix remote name in password prompt
* use sh -c to get around shell weirdness
* remove cmd.exe special cases
* use GetWatcher().GetFullConfig() rather than re-reading the config file
* change order of things we do when establishing a connection. ask for wsh up front. then do domain socket, then connserver
* reduce number of sessions required in the common case when wsh is already installed. running the connserver is now a "multi-command" which checks if it is installed, then asks for the version
* send jwt token over stdin instead of in initial command string
* fix focus bug for frontend conn modal
* track more information in connstatus
* simplify wshinstall function
* add nowshreason
* other misc cleanup
implements `wsh run` command. lots of fixes (and new options) for command blocks. cleans up the UX/UI for command blocks. lots of bug fixes for blockcontrollers. other minor bug fixes.
also makes editor:* vars into settings override atoms.
Adds a meta field `pinnedurl` that can be set to override the
`web:defaulturl` setting for a given block. Also adds a home button to
the webview to reset the block url to the homepage
The help view is now an extension of the webview with some of the chrome
removed.
Also updates the cookie dependency to resolve a vulnerability
