env log repo filter

[jumboduck]

This change adds the --repo flag to the log environment command, and filter the query by repo.
The flag can be repeated, which will result in a repeated query parameter in the requested url.

[Copilot]

Pull request overview

Adds support for filtering kosli log environment events by one or more repositories via a new --repo flag, producing repeated query parameters in the request URL.

Changes:

• Add --repo flag to log environment and append repo_name query parameters to the events API request.
• Extend command help/usage examples to document repo-filtered event listing.
• Expand the test suite setup and add new test cases covering repo filtering.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
cmd/kosli/logEnvironment.go	Adds --repo flag plumbing and appends repo_name query parameters when fetching environment events.
cmd/kosli/logEnvironment_test.go	Enhances test setup with repo-related context and adds test cases for --repo filtering behavior.

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[jbpros]

We're still doing some unsafe string manipulation here.

Something like this would be safe, I think?

    u, err := url.Parse(global.Host)
	if err != nil {
		return fmt.Errorf("failed to parse host URL: %w", err)
	}
	u.Path, err = url.JoinPath(u.Path, "/api/v2/environments", global.Org, envName, "events")
	if err != nil {
		return fmt.Errorf("failed to join URL path: %w", err)
	}