feat(info): add AnyGM core metadata

[retrodiv]

Adds metadata for AnyGM, a portable runtime and libretro core for supported GameMaker content formats.

Source repository: https://github.com/retrodiv/AnyGM-libretro

Reviewed revision: f18d67fbe8fd164094fc1477ff7692d6ff8fc67b

Successful GitHub Actions run: https://github.com/retrodiv/AnyGM-libretro/actions/runs/35475613370

Supported content: classic container revisions 530, 600, 701, 702, 800 and 810, Studio bytecode revisions 14 through 17, and the declared path formats. The source includes a Makefile and root .gitlab-ci.yml.

I would also like to arrange GitLab mirroring and buildbot integration for the declared targets.

[retrodiv]

Buildbot integration request: AnyGM

I maintain AnyGM, a portable runtime and libretro core for supported
GameMaker content formats that combines classic containers and Studio bytecode
in one execution engine.

Source repository: https://github.com/retrodiv/AnyGM-libretro

Reviewed revision: f18d67fbe8fd164094fc1477ff7692d6ff8fc67b

Successful GitHub Actions run: https://github.com/retrodiv/AnyGM-libretro/actions/runs/35475613370

Branch to mirror: main

Core info PR: #2112

Documentation PR: libretro/docs#1198

Maintainer: retrodiv. Issue tracker: https://github.com/retrodiv/AnyGM-libretro/issues

The checked-in source builds directly with make, without an external
porter, sibling repositories or resource downloads for ordinary builds.
Its root .gitlab-ci.yml uses the shared templates with
CORENAME=anygm and JNI_PATH=..

Requested initial targets: Windows x86_64 and i686 (MinGW), Linux x86_64,
i686 and aarch64, and macOS x86_64 and arm64.

Content: classic container revisions 530, 600, 701, 702, 800 and 810,
Studio bytecode revisions 14 through 17, and the declared path formats,
including single-runtime executables with an embedded Studio payload. The
core contains no game content and no proprietary runtime components.
The linked Actions run is build/test evidence; it does not establish
interactive RetroArch execution on every target.

License (first-party code under MIT, bundled components under their own
terms): https://github.com/retrodiv/AnyGM-libretro/blob/f18d67fbe8fd164094fc1477ff7692d6ff8fc67b/LICENSE

Component notices: https://github.com/retrodiv/AnyGM-libretro/blob/f18d67fbe8fd164094fc1477ff7692d6ff8fc67b/THIRD_PARTY_NOTICES.md

Corresponding source: https://github.com/retrodiv/AnyGM-libretro/tree/f18d67fbe8fd164094fc1477ff7692d6ff8fc67b

Could you add the repository as a CI mirror and enable successful builds
through the buildbot and Core Downloader? Please confirm synchronization
and how source references and component notices accompany the libraries.
I can address any integration issues in the core.

[gouchi]

@fpscan Should be good to go ;)