1.6.1-0.1.2: Enhancement - Exchange Rate API

[lnbc1QWFyb24]

This PR connects Clams to a new server endpoint: https://api.clams.tech which has a new codebase. Exchange rates will be fetched and cached by the server, and the app will fetch from there instead. This will help with rate limits on the external exchange rate API's.
To save bandwidth the app will only fetch the exchange rate for the fiat denomination that is set in the app. A new exchange rate will be fetched every 5 minutes or when the fiat denomination is changed.

The wsproxy lives at the /ws-proxy route on the new server and Clams now connects to that.
The https proxy for lnurl calls lives at /http-proxy.

Closes #144

[lnbc1QWFyb24]

I also updated the Sveltekit dependency to fix a couple of security alerts.

[socket-security]

New dependency changes detected. Learn more about Socket for GitHub ↗︎

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👍 No new dependency issues detected in pull request

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Ignoring: @sveltejs/kit@1.15.2

Pull request alert summary

Issue	Status
Install scripts	✅ 0 issues
Native code	✅ 0 issues
Bin script shell injection	✅ 0 issues
Unresolved require	✅ 0 issues
Invalid package.json	✅ 0 issues
HTTP dependency	✅ 0 issues
Git dependency	✅ 0 issues
Potential typo squat	✅ 0 issues
Known Malware	✅ 0 issues
Telemetry	✅ 0 issues
Protestware/Troll package	✅ 0 issues

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📊 Modified Dependency Overview:

⬆️ Updated Package	Version Diff	Added Capability Access	+/- Transitive Count	Publisher
@sveltejs/kit@1.15.2	1.8.4...1.15.2	None	+0/-0	svelte-admin

[lnbc1QWFyb24]

@SocketSecurity ignore @sveltejs/kit@1.15.2

[johngribbin]

had a good play around, dont see any issues! app actually feels a little faster or is it just me??