refactor(devtools-view): Move axe-core to devDependencies

[alexvy86]

Description

axe-core is used for accessibility tests only, it doesn't need to be a prod dep.

Reviewer Guidance

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[msfluid-bot]

⯅ @fluid-example/bundle-size-tests: +245 Bytes

Metric Name	Baseline Size	Compare Size	Size Diff
aqueduct.js	459.57 KB	459.61 KB	⯅ +35 Bytes
azureClient.js	556.79 KB	556.84 KB	⯅ +49 Bytes
connectionState.js	724 Bytes	724 Bytes	■ No change
containerRuntime.js	259.19 KB	259.2 KB	⯅ +14 Bytes
fluidFramework.js	405.81 KB	405.82 KB	⯅ +14 Bytes
loader.js	134.24 KB	134.25 KB	⯅ +14 Bytes
map.js	42.46 KB	42.46 KB	⯅ +7 Bytes
matrix.js	148.29 KB	148.29 KB	⯅ +7 Bytes
odspClient.js	523.75 KB	523.8 KB	⯅ +49 Bytes
odspDriver.js	97.84 KB	97.86 KB	⯅ +21 Bytes
odspPrefetchSnapshot.js	42.81 KB	42.82 KB	⯅ +14 Bytes
sharedString.js	164.48 KB	164.49 KB	⯅ +7 Bytes
sharedTree.js	396.27 KB	396.28 KB	⯅ +7 Bytes
Total Size	3.31 MB	3.31 MB	⯅ +245 Bytes

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Baseline commit: aec0233

Generated by 🚫 dangerJS against 46b2355