* move log/filter functions into own file
* add ShellCheck global directives
* use new function for tracking logs
The new function, called `_send_email_with_mid`, aligns with suggestions
from @polarethene and is heavily simplified compared to its predecessor
`_send_email_and_get_id`. New helpers will be introduced to filter logs
according to the MID constructed in this function.
* new filters for searching logs with MID
* use new filters (and sending) functions
* add new helper for asserting non-existence of log message
* use new filters in tests
* Apply suggestions from code review
- `_mid` / `MID` => `_msgid` / `MSG_ID`
- Revised documentation / tooltip comments
* Apply suggestions from code review
* fix tests
* use more distinct names for MSG_ID headers
* update `_filter_service_log` to not use `-i -E`
Moreover, I added a function to print the whole mail log. Appropriate
comments were added to this function to indicate that one should only
use this function when necessary.
* adjust helpers to new helper filter
* follow-up of previous commit
* add CHANGELOG entry
* Apply suggestions from code review
* chore: Update OAuth2 to use new log helper
* Apply suggestions from code review
Co-authored-by: Brennan Kinney <5098581+polarathene@users.noreply.github.com>
* added explicit `_regexp` filters for logs
* Apply suggestions from code review
---------
Co-authored-by: Brennan Kinney <5098581+polarathene@users.noreply.github.com>
