Add new package portaudio v19.7.0 to SPECS-EXTENDED

[Ankita13-code]

Merge Checklist

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json, .github/workflows/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./LICENSES-AND-NOTICES/SPECS/data/licenses.json, ./LICENSES-AND-NOTICES/SPECS/LICENSES-MAP.md, ./LICENSES-AND-NOTICES/SPECS/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

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Summary

Adds the PortAudio audio I/O library (v19.7.0) to SPECS-EXTENDED. PortAudio is
a free, cross-platform, open-source audio I/O library that lets applications
record and play audio from C/C++. It is needed to enable live voice-interaction
samples requested in #15139. The package is built with the ALSA backend and
ships a runtime library plus a -devel subpackage (headers and pkgconfig file).

Change Log

• Add new package portaudio v19.7.0 to SPECS-EXTENDED (portaudio.spec, portaudio.signatures.json)
  • Builds portaudio (runtime, ALSA backend) and portaudio-devel (headers + portaudio-2.0.pc)
• Register the upstream source tarball in cgmanifest.json
• Update LICENSES-AND-NOTICES/SPECS/data/licenses.json and LICENSES-MAP.md (MIT)

Does this affect the toolchain?

NO

Associated issues

• fixes Include PortAudio in Azure Linux Repository #15139

Test Methodology

• Local build with the Azure Linux toolkit on an Azure Linux 3.0 host:
  sudo make build-packages REBUILD_TOOLS=y SRPM_PACK_LIST="portaudio" PACKAGE_REBUILD_LIST="portaudio" SPECS_DIR=../SPECS-EXTENDED — 1 SRPM, 0 failures.
• Standalone rpmbuild -ba portaudio.spec produces portaudio, portaudio-devel, and portaudio-debuginfo RPMs.
• cgmanifest and license_map.py validators pass.
• Buddy build: https://dev.azure.com/mariner-org/mariner/_build/results?buildId=1144200&view=results