refactor: Pass printer to text handler

[TerryHowe]

What this PR does / why we need it:

Pass printer object to text handler.

• Fewer arguments to the handlers
• Handlers use the same mutex used elsewhere

I'm going to explore the possibility of passing the printer to the json and template handler, but trying to keep this small.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.32%. Comparing base (37941a0) to head (c96490c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1420      +/-   ##
==========================================
- Coverage   85.33%   85.32%   -0.01%     
==========================================
  Files         106      106              
  Lines        3798     3810      +12     
==========================================
+ Hits         3241     3251      +10     
- Misses        333      334       +1     
- Partials      224      225       +1     

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[qweeah]

I'm going to explore the possibility of passing the printer to the json and template handler, but trying to keep this small.

Making printer implement io.Writer should help.

[qweeah]

LGTM, still need other reviewer approval on the printer's implementation of io.Writer