add api for get unused triggers

[kissken]

for getting triggers without subs

[kissken]

/build

[codecov-commenter]

Codecov Report

Merging #915 (9da9c40) into master (2d493de) will decrease coverage by 0.03%.
The diff coverage is 73.80%.

❗ Current head 9da9c40 differs from pull request most recent head 62df4fd. Consider uploading reports for the commit 62df4fd to get more accurate results

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@@            Coverage Diff             @@
##           master     #915      +/-   ##
==========================================
- Coverage   68.89%   68.87%   -0.03%     
==========================================
  Files         196      196              
  Lines       10948    10975      +27     
==========================================
+ Hits         7543     7559      +16     
- Misses       2962     2972      +10     
- Partials      443      444       +1     

Files Changed	Coverage Δ
api/handler/triggers.go	30.06% <0.00%> (-1.88%)	⬇️
api/controller/triggers.go	89.43% <93.93%> (-0.10%)	⬇️

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[github-actions]

Build and push Docker images with tag: 2023-09-18.6b96719

[github-actions]

Build and push Docker images with tag: 2023-09-18.6b96719