feat(axum): provide docs for Axum

[lcian]

DESCRIBE YOUR PR

Provides getting started docs for Axum.
The structure is very similar to the one used in #13821, only the code snippets are different.

IS YOUR CHANGE URGENT?

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• Urgent deadline (GA date, etc.):
• Other deadline:
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SLA

• Teamwork makes the dream work, so please add a reviewer to your PRs.
• Please give the docs team up to 1 week to review your PR unless you've added an urgent due date to it.
  Thanks in advance for your help!

PRE-MERGE CHECKLIST

Make sure you've checked the following before merging your changes:

• Checked Vercel preview for correctness, including links
• PR was reviewed and approved by any necessary SMEs (subject matter experts)
• PR was reviewed and approved by a member of the Sentry docs team

LEGAL BOILERPLATE

Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. and is gonna need some rights from me in order to utilize my contributions in this here PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

EXTRA RESOURCES

• Sentry Docs contributor guide

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
sentry-docs	🛑 Canceled (Inspect)			May 23, 2025 4:20pm

2 Skipped Deployments

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[codecov]

Bundle Report

Changes will increase total bundle size by 17.8kB (0.08%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
sentry-docs-server-cjs	11.21MB	7.44kB (0.07%) ⬆️
sentry-docs-client-array-push	9.52MB	10.35kB (0.11%) ⬆️

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	868.7kB	-0.0%
static/chunks/8165-*.js	-3 bytes	410.1kB	-0.0%
server/app/_not-*.js	1.3kB	259.77kB	0.5%
server/app/[[...path]]/page_client-*.js	1.3kB	259.74kB	0.5%
server/app/platform-*.js	1.2kB	245.18kB	0.49%
static/chunks/4459-*.js (New)	120.58kB	120.58kB	100.0% 🚀
static/chunks/app/[[...path]]/page-*.js	80 bytes	79.81kB	0.1%
static/chunks/404-*.js	78 bytes	43.68kB	0.18%
static/chunks/app/platform-*.js	80 bytes	13.18kB	0.61%
/static/media/tokio.*.svg (New)	3.0kB	3.0kB	100.0% 🚀
/static/media/tokio.*.svg (New)	3.01kB	3.01kB	100.0% 🚀
static/13W-*.js (New)	578 bytes	578 bytes	100.0% 🚀
static/13W-*.js (New)	77 bytes	77 bytes	100.0% 🚀
static/chunks/1754-*.js (Deleted)	-120.27kB	0 bytes	-100.0% 🗑️
static/5MUmrhDsPjZaH4Nue2mIt/_buildManifest.js (Deleted)	-578 bytes	0 bytes	-100.0% 🗑️
static/5MUmrhDsPjZaH4Nue2mIt/_ssgManifest.js (Deleted)	-77 bytes	0 bytes	-100.0% 🗑️

Files in static/chunks/404-*.js:

• ./src/components/platformIcon.tsx → Total Size: 36.71kB

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

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
1729.js	-3 bytes	1.75MB	-0.0%
../instrumentation.js	-3 bytes	1.08MB	-0.0%
9523.js	-3 bytes	1.05MB	-0.0%
../app/[[...path]]/page.js	158 bytes	585.26kB	0.03%
../app/[[...path]]/page.js.nft.json	113 bytes	398.34kB	0.03%
../app/platform-redirect/page.js.nft.json	113 bytes	398.25kB	0.03%
../app/sitemap.xml/route.js.nft.json	113 bytes	396.23kB	0.03%
1379.js (New)	192.39kB	192.39kB	100.0% 🚀
9273.js	155 bytes	83.26kB	0.19%
../app/platform-redirect/page.js	160 bytes	31.52kB	0.51%
../../static/media/tokio.*.svg (New)	3.0kB	3.0kB	100.0% 🚀
../../static/media/tokio.*.svg (New)	3.01kB	3.01kB	100.0% 🚀
3913.js (Deleted)	-191.76kB	0 bytes	-100.0% 🗑️

Files in 9273.js:

• ./src/components/platformIcon.tsx → Total Size: 36.64kB

• ./src/components/platformIcon.tsx → Total Size: 36.64kB

App Routes Affected:

App Route	Size Change	Total Size	Change (%)
/platform-redirect	160 bytes	2.58MB	0.01%
/[[...path]]	158 bytes	3.13MB	0.01%