Add Apache AGE extension package

[noctarius]

Adds buildroot package files for Apache AGE 1.7.0, a PostgreSQL 18 extension providing graph database functionality with graph database and OpenCypher query language support.

• apache-age.mk — PGXS-based build and explicit install of age.so, age.control, and SQL extension files
• Config.in — Buildroot menu config with depends on BR2_PACKAGE_POSTGRESQL
• apache-age.hash — SHA256 checksum for the PG18/v1.7.0-rc0 source tarball

[Copilot]

Pull request overview

Adds a new Buildroot (external) package definition for the Apache AGE PostgreSQL extension, wiring it into the external tree’s Config.in so it can be selected alongside other Postgres-related packages.

Changes:

• Introduces apache-age package Config.in, .mk, and .hash for building/installing Apache AGE against PostgreSQL.
• Adds the new package to the external tree’s top-level prototype/Config.in menu sources.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
prototype/package/apache-age/Config.in	New Buildroot Kconfig entry for enabling the apache-age extension.
prototype/package/apache-age/apache-age.mk	New build/install recipe for Apache AGE (PGXS-based).
prototype/package/apache-age/apache-age.hash	Adds the source tarball SHA256 for the selected AGE tag.
prototype/Config.in	Sources the new apache-age package Config.in so it shows up in menuconfig.

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[mxsrc]

Looks generally good, what do we need this for? At some point we'll have all extensions built in, anything we'll add we also have to maintain.

[noctarius]

There will be no way around it. Anyhow, in this case, it's used for larger graphs and more complex graph queries in postbrain.