Add --all flag to send all log types

[ethack]

• This change adds a new flag --all to the script that gives the option of sending all log types instead of just certain logs.
• This is desirable in many cases as we don't have access to the sensor but do have access to the AC-Hunter system and the log types not used by AC-Hunter are useful for manual hunting or adding additional context to findings in AC-Hunter.
• Everything is backwards compatible and the default behavior of the script remains unchanged.
• I tested this on a customer system and it worked as expected.

This PR is an alternative the supersedes the (buggy) implementation in the transfer-all branch. That branch also changes the default behavior of the script which, in my view, is an unwelcome change.

This PR is an alternative to #9 which is an attempt at a more flexible approach. But that approach has way more changes to the existing script and is more time consuming to test.

[ethack]

I was changing this text to document the new flag anyway so I took a stab at reworking the help text format to something more inline with other unix programs. If this change is a problem I can revert to the old help format.