Configure LSP log level separately from Logger level

[mhanberg]

Description

We now have a logger handler for the window/logMessage notification, so logs from Logger.etc get sent to the editor.

We should add a configurable log level for this, as we don't want debug logs (like the gen_lsp) sent to the editor, as they are just noisy.

Also, i believe we are now probably logging things twice

[Log] sent notification server -> client $/progress
[Log] Node port message: 
10:35:48.570 [debug] sent notification server -> client $/progress

In this one, i can't actually tell if the third line is a continuation of the 2nd line, but if we trace the rpc messages we can find out.

[mhanberg]

From zed's rpc buffer

/ Receive:
{"jsonrpc":"2.0","method":"window/logMessage","params":{"message":"Node port message: \n11:02:02.456 [debug] sent notification server -> client window/logMessage","type":4}}