chore: configure prettier & apply formatting

[alex-mcgovern]

Just noticed apparently we've never had a prettier config, which explains why we got a lot of noise in diffs around formatting.

Thir PR adds one, and applies the formatting changes. It re-uses the config in place for Minder, Trusty etc.

[ghost]

Minder Vulnerability Report ✅

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

Vulnerability scan of 7bf78fe1:

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

[coveralls]

Pull Request Test Coverage Report for Build 13325211149

Details

• 360 of 519 (69.36%) changed or added relevant lines in 99 files are covered.
• 5 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.02%) to 68.625%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/features/dashboard-messages/components/search-field-messages.tsx	2	3	66.67%
src/features/dashboard-messages/components/token-usage-by-providers.tsx	0	1	0.0%
src/features/dashboard-messages/components/token-usage-icon.tsx	0	1	0.0%
src/features/dashboard-messages/hooks/use-messages-filter-search-params.ts	16	17	94.12%
src/features/workspace/hooks/use-mutation-archive-workspace.ts	7	8	87.5%
src/features/workspace/hooks/use-mutation-restore-workspace.ts	4	5	80.0%
src/hooks/use-confirm.tsx	2	3	66.67%
src/lib/format-time.ts	1	2	50.0%
src/lib/react-query-utils.ts	2	3	66.67%
src/routes/route-not-found.tsx	1	2	50.0%

Files with Coverage Reduction	New Missed Lines	%
src/components/react-query-provider.tsx	1	0.0%
src/features/providers/hooks/use-mutation-create-provider.ts	1	0.0%
src/features/workspace/hooks/use-mutation-restore-workspace.ts	1	54.55%
src/features/workspace/hooks/use-mutation-archive-workspace.ts	2	51.52%

Totals
Change from base Build 13325105088:	0.02%
Covered Lines:	769
Relevant Lines:	1061

---

💛 - Coveralls