[chloggen] Use go embed to embed the template file

[atoulme]

Fixes #224

[codecov]

Codecov Report

Base: 58.85% // Head: 58.86% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (b74af7c) compared to base (0272a80).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #225      +/-   ##
==========================================
+ Coverage   58.85%   58.86%   +0.01%     
==========================================
  Files          44       44              
  Lines        2000     1991       -9     
==========================================
- Hits         1177     1172       -5     
+ Misses        692      689       -3     
+ Partials      131      130       -1     

Impacted Files	Coverage Δ
chloggen/internal/chlog/context.go	69.56% <ø> (+6.23%)	⬆️
chloggen/internal/chlog/summary.go	91.66% <100.00%> (-0.44%)	⬇️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[atoulme]

ah bleh. I'll fix.

[atoulme]

codecov says:

[2023-01-19T01:18:03.580Z] ['verbose'] Passed token was 0 characters long

I think something is broken with the codecov secret.