FEATURE EP-0 Modernises Vaporshell code and pulls from new AWS spec format

[stuhay]

Summary

Modernises the VaporShell module by migrating to the new AWS CloudFormation Resource Provider Schema format and removing deprecated/dead code.

Schema Pipeline Migration

• Migrate from monolithic CFN spec to Resource Provider Schemas — downloads per-region zip files from 37 regions (up from 23) using the new https://schema.cloudformation.<region>.amazonaws.com/CloudformationSchema.zip URLs
• New adapter function ConvertFrom-ProviderSchema transforms JSON Schema format into the legacy structure that Convert-SpecToFunction expects — zero changes needed to the function generator
• Result: 1,667 resource types (identical to baseline), 8,985 property types (335 new additions, 0 regressions), zero parse errors across 10,652 generated files

Build Pipeline Cleanup

• Replace Azure Pipelines gist dependency with local ci/BuildHelpers.ps1 (40 lines vs 400)
• Remove dead Twitter/PoshTwit publishing task (API deprecated 2023)
• Remove GitHub release publishing to SCRT-HQ (original author org)
• Simplify build.ps1 — no more gist download or stale module dependencies

Deprecated Code Removal

• Replace cfn-flip (archived 2023) with powershell-yaml module for YAML conversion
• Bump minimum PowerShell from 3.0 to 5.1
• Delete ProcessRequest3.ps1 (PS3-only code path)
• Modernise AWS credential handling: StoredProfileAWSCredentials to CredentialProfileStoreChain
• Remove AWSPowerShell/AWSPowerShell.NetCore legacy fallbacks from Import-AWSSDK.ps1
• Update Pester from v4 to v5

Metadata Updates

• Module manifest updated for ITV (author, company, copyright, URLs)
• Added AWS::LanguageExtensions to PseudoParams.txt
• Removed dead Spotinst icon URL

Testing

• 55 Pester 5 tests (31 unit + 24 integration) — all passing
• Full build comparison against installed module confirms zero regressions
• All generated PowerShell files validate with zero parse errors

[snyk-io-eu]

✅ Snyk checks have passed. No issues have been found so far.

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