chore: test compat on windows

[jonathanyeung]

Fixing test compat issues that prevent the tests from running/succeeding on Windows:

1. Various Path Issues

• Some API's have a lower case vs upper-case for the drive prefix; i.e. c:\ vs C:\. We need to always do case-insensitive string comparisons when doing file path checks.
• The usual \ vs / issues.
• Some parameter spacing problems when invoking the Git command

2. Logger Issues - There's a file handle problem that occurs on Windows with fs/fs-extra that prevents a rename on the log file and leads to the following error. We can just wrap in try/catch as it's not very important where the log ends up during the test:

    Error: EPERM: operation not permitted, rename 'C:\Users\jonat\AppData\Local\Temp\tmp-3032-7f5nAzN3323h\dendron.log' -> 'C:\Users\jonat\AppData\Local\Temp\tmp-3032-7f5nAzN3323h\dendron.log.old'
  	at Object.renameSync (fs.js:772:3)
  	at rename (c:\Code\_dendron\dendron\packages\plugin-core\node_modules\fs-extra\lib\move-sync\move-sync.js:31:8)
  	at doRename (c:\Code\_dendron\dendron\packages\plugin-core\node_modules\fs-extra\lib\move-sync\move-sync.js:23:12)
  	at Object.moveSync (c:\Code\_dendron\dendron\packages\plugin-core\node_modules\fs-extra\lib\move-sync\move-sync.js:17:10)
  	at Function.configure (c:\Code\_dendron\dendron\packages\plugin-core\out\src\logger.js:21:32)
  	at Context.<anonymous> (c:\Code\_dendron\dendron\packages\plugin-core\out\src\test\testUtilsV3.js:191:25)
  	at processImmediate (internal/timers.js:461:21)
  	at process.callbackTrampoline (internal/async_hooks.js:131:14)

There are still some outstanding issues:

• Some formatting differences in hover causing failures in ReferenceProvider.test.ts - I'll follow up with @SeriousBug
• Also an outstanding issue with the homedir mock. I'll try to tackle this one later

@kevinslin - is there a way to add a windows flavor to the github CI pass?