chore(tsconfig): move compilerOptions up

[caugner]

Summary

Consolidates our tsconfig.json somewhat by moving some common compilerOptions into our root tsconfig.json:

• allowSyntheticDefaultImports = true
• esModuleInterop = true
• forceConsistentCasingInFileNames = true
• moduleResolution = node
• resolveJsonModule = true
• skipLibCheck = true

Exceptions:

• /markdown/tsconfig.json needs esModuleInterop = false.
• /client/pwa/tsconfig.json doesn't extend /tsconfig.json.

Note: Partially extracted from #6487.

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How did you test this change?

• See checks.

[caugner]

That test failure surprises me, but it looks like extends doesn't work as I would have expected.

[LeoMcA]

can we also remove resolveJsonModule from tsconfig.dist.json?

otherwise, looks good!