feat(function): add function triggers

[Codelax]

No description provided.

[codecov-commenter]

Codecov Report

Merging #1912 (d52f699) into master (c97546b) will decrease coverage by 0.11%.
The diff coverage is 62.10%.

@@            Coverage Diff             @@
##           master    #1912      +/-   ##
==========================================
- Coverage   74.01%   73.90%   -0.11%     
==========================================
  Files         177      179       +2     
  Lines       27578    27865     +287     
==========================================
+ Hits        20412    20595     +183     
- Misses       5431     5513      +82     
- Partials     1735     1757      +22     

Impacted Files	Coverage Δ
scaleway/resource_function.go	67.86% <0.00%> (-0.77%)	⬇️
scaleway/helpers_function_triggers.go	59.09% <59.09%> (ø)
scaleway/resource_function_trigger.go	60.89% <60.89%> (ø)
scaleway/helpers_function.go	73.74% <100.00%> (+2.05%)	⬆️
scaleway/provider.go	79.27% <100.00%> (+0.06%)	⬆️

... and 2 files with indirect coverage changes