Log channel suppressed when activation fails

[gnikit]

Describe the bug
The log channel will not initialise when activation of the extension fails. This is relatively easy to happen since during activation we run the linter to all open fortran files. So if anything causes the linter to abort then the extension activation is not completed and the log channel is not initialised.

The solution is to make the logger global and not initialise it in the activate function

Build info (please complete the following information):

• OS: All
• Extension Version: ^2.3.0
• Visual Studio Code Version: All

[gnikit]

This was fixed via ec07a9c