feat: initial work on alerts summary cards

[alex-mcgovern]

• adds the "alerts summary cards" to the UI
• this is a "first-pass" PR, there is a second piece of work to make these work as triggers for filtering the table view — although I need to speak to James about this
• this also begins refactoring the data fetching for alerts, which is a little complex — the goal is (over time) to break it down into smaller abstractions. To start with I have just updated the query key on the old useAlertsData hook, and marked it as deprecated, so there aren't any conflicts
• closes Replace charts with other metrics box #196
• closes [UI]: Integrate token usage #214

[coveralls]

Pull Request Test Coverage Report for Build 13032675856

Details

• 20 of 20 (100.0%) changed or added relevant lines in 10 files are covered.
• 14 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+4.4%) to 71.513%

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Files with Coverage Reduction	New Missed Lines	%
src/hooks/useAlertsData.ts	5	86.0%
src/lib/utils.ts	9	65.69%

Totals
Change from base Build 13032637167:	4.4%
Covered Lines:	743
Relevant Lines:	980

---

💛 - Coveralls

[stacklok-cloud-staging]

Minder Vulnerability Report ✅

Minder analyzed this PR and found it does not add any new vulnerable dependencies.

Vulnerability scan of fc09eabb:

• 🐞 vulnerable packages: 0
• 🛠 fixes available for: 0

[stacklok-cloud-staging]

Dependency Information

Minder analyzed the dependencies introduced in this pull request and detected that some dependencies do not meet your security profile.

📦 Dependency: @rollup/rollup-darwin-arm64

Trusty Score: 0

Scoring details

Component	Score
Package activity	9
Repository activity	8.5
User activity	9.6
Provenance	historical_provenance_match

Proof of Origin (Provenance)

This package can be linked back to its source code using a historical provenance map.

We were able to correlate a significant number of git tags and tagged releases in this package’s source code to versions of the published package. This mapping creates a strong link from the package back to its source code repository, verifying proof of origin.

Published package versions	112
Number of git tags or releases	203
Versions matched to tags or releases	89