Multiple Updates for logging

[andrew-welker]

• Modified map between old Debug levels (0, 1, 2) and Serilog LogEventLevels to more accurately reflect their usage
• Updated the appdebug console command to allow for using either integers or the Serilog LogEventLevel strings.
• Moved the CrestronLogger initialization and writing to a Serilog Sink and marked the ConsoleWithLog methods as obsolete
• Updated the path for the Serilog file sink to write to a folder for the particular slot that's writing the log, along with changing the path depending on if it's an appliance or a VC-4 server. We may want to explore changing the path again, as the files may disappear if a room is removed
• Updated the file sink to retain 30 days of log files at the Debug level on an appliance, and 60 days on a VC-4 server
• Updated the format of messages logged to the file

[andrew-welker]

For reference:

Serilog Level	Old Essentials Level	Serilog Integer value
Verbose	2	0
Debug	1	1
Information	0	2
Warning		3
Error		4
Fatal		5