Migrate @storybook/node-logger to TypeScript

[dandean]

Issue: #5030

What I did

Migrated @storybook/node-logger to TypeScript.

Two notes:

1. I had to do some funny stuff in the tests to get TS to allow me to call the mockReset() method. I wold love some eyes on that to see if I'm doing that correctly; there may be something I'm missing entirely.
2. The trace() method used to pass the trace message to the first argument of npmlog.info. This was causing TS to fail to compile. To fix the issue I'm now passing the message as the 2nd argument and an empty string to the first (just as all of the other methods are doing). My guess is that passing the message as the first argument was an oversight in the first place.

How to test

Existing tests continue to work.

[codecov]

Codecov Report

Merging #5153 into next will increase coverage by 0.02%.
The diff coverage is 60%.

@@            Coverage Diff             @@
##             next    #5153      +/-   ##
==========================================
+ Coverage   35.22%   35.24%   +0.02%     
==========================================
  Files         596      596              
  Lines        7392     7396       +4     
  Branches     1015     1010       -5     
==========================================
+ Hits         2604     2607       +3     
- Misses       4275     4276       +1     
  Partials      513      513

Impacted Files	Coverage Δ
lib/node-logger/src/index.ts	80% <60%> (ø)

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