feat(rust): add docs for logs

[lcian]

DESCRIBE YOUR PR

Adds docs for new logs feature for Rust.
Also adds Rust to the list of available SDKs.
To be merged after 0.39 is released.
404s are unrelated
Closes getsentry/sentry-rust#826

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[vercel]

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[codecov]

Bundle Report

Changes will increase total bundle size by 153 bytes (0.0%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
sentry-docs-server-cjs	10.86MB	159 bytes (0.0%) ⬆️
sentry-docs-client-array-push	9.77MB	-6 bytes (-0.0%) ⬇️

Affected Assets, Files, and Routes:

view changes for bundle: sentry-docs-client-array-push

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
static/chunks/pages/_app-*.js	-3 bytes	873.24kB	-0.0%
static/chunks/7750-*.js	-3 bytes	401.83kB	-0.0%
server/middleware-*.js	5.55kB	6.55kB	555.3% ⚠️
server/middleware-*.js	-5.55kB	1.0kB	-84.74%
static/Dyhu1qL2A9lHbZaYbPE4Y/_buildManifest.js (New)	616 bytes	616 bytes	100.0% 🚀
static/Dyhu1qL2A9lHbZaYbPE4Y/_ssgManifest.js (New)	77 bytes	77 bytes	100.0% 🚀
static/0CXDODBn6JFg5UJIV1w3S/_buildManifest.js (Deleted)	-616 bytes	0 bytes	-100.0% 🗑️
static/0CXDODBn6JFg5UJIV1w3S/_ssgManifest.js (Deleted)	-77 bytes	0 bytes	-100.0% 🗑️

view changes for bundle: sentry-docs-server-cjs

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
1729.js	-3 bytes	1.63MB	-0.0%
../instrumentation.js	-3 bytes	957.45kB	-0.0%
9523.js	-3 bytes	933.5kB	-0.0%
../app/[[...path]]/page.js.nft.json	56 bytes	399.6kB	0.01%
../app/platform-redirect/page.js.nft.json	56 bytes	399.51kB	0.01%
../app/sitemap.xml/route.js.nft.json	56 bytes	397.49kB	0.01%

[lcian]

Due to a technical limitation in macros visibility in Rust, these need to be exported at top-level.
We named them with a logger_ prefix to sort of follow the spec and prevent confusion with e.g. capture_error.

[AbhiPrasad]

Thanks @lcian!!