Add error handling when loading payloads

[dwelch-r7]

Adding in some error handling to payload loading so we don't crash msfconsole on boot as described here #18198 (note that the root cause of the issue described in #18198 is already addressed in #18171 where I borrowed some of this code from)

To replicate the original issue:

• boot up msfconsole
• setg payload windows/x64/meterpreter/reverse_tcp # This sets the payload datastore option globally
• exit and then restart msfconsole
• It should crash

Verification Steps

• msfconsole no longer crashes on boot up with a globally set payload datastore option
• The error is logged to ~/.msf4/logs/framework.log

[jmartin-tech]

May not be viable the more I look at the slight variation but might also be able to expand the refactor make the process more generic too.

[adfoster-r7]

Release Notes

Adds additional error handling when loading Metasploit payloads to msfconsole's startup process to ensure missing payloads do not crash msfconsole