Add support for Sentry

[NGTmeaty]

Also fixes pyroscope for URL-scoped crawl. Closes #453

[Copilot]

Pull Request Overview

This pull request adds support for Sentry error monitoring and reporting to the application. The change integrates the Sentry SDK to enable error tracking and performance monitoring.

• Adds Sentry DSN configuration parameter to enable Sentry monitoring
• Creates reusable initialization functions for both Pyroscope and Sentry
• Integrates Sentry initialization into the application startup flow

Reviewed Changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
internal/pkg/config/config.go	Adds SentryDSN configuration field
go.mod	Adds sentry-go dependency
cmd/utils.go	Creates shared initialization functions for Pyroscope and Sentry
cmd/get_url.go	Integrates Sentry initialization into get_url command
cmd/get_hq.go	Refactors to use shared Pyroscope function and adds Sentry initialization
cmd/get.go	Adds sentry-dsn command line flag

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 1.66667% with 59 lines in your changes missing coverage. Please review.
✅ Project coverage is 55.66%. Comparing base (7ba600c) to head (945a57d).
⚠️ Report is 85 commits behind head on main.

Files with missing lines	Patch %	Lines
cmd/utils.go	0.00%	43 Missing ⚠️
cmd/get_url.go	0.00%	8 Missing and 2 partials ⚠️
cmd/get_hq.go	0.00%	5 Missing ⚠️
internal/pkg/stats/prometheus.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #456      +/-   ##
==========================================
- Coverage   55.86%   55.66%   -0.21%     
==========================================
  Files         128      129       +1     
  Lines        8053     8084      +31     
==========================================
+ Hits         4499     4500       +1     
- Misses       3182     3210      +28     
- Partials      372      374       +2     

Flag	Coverage Δ
e2etests	38.90% <1.66%> (-0.14%)	⬇️
unittests	29.20% <0.00%> (-0.12%)	⬇️

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[willmhowes]

lgtm!