Enable socket gpg-agent

[alexojegu]

Partial solution to sign commits. I hope that a complete solution will come soon:
https://lists.gnupg.org/pipermail/gnupg-users/2025-February/067501.html

[flathubbot]

Started test build 191815

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Build 191815 successful
To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/175098/com.visualstudio.code.flatpakref

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Started test build 193837

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Build 193837 successful
To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/177061/com.visualstudio.code.flatpakref

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🚧 Test build enqueued.

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🚧 Started test build.

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🚧 Test build succeeded. To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/182598/com.visualstudio.code.flatpakref

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🚧 Test build enqueued.

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🚧 Started test build.

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✅ Test build succeeded. To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/197923/com.visualstudio.code.flatpakref

[alexojegu]

@bilelmoussaoui, Can you merge this?

The issues with gpg-agent have been fixed with the latest version of freedesktop-sdk, tested with freedesktop-sdk-24.08.22. More information in GitLab issue and merge request.

So now the GIT commit signature should work after merging this PR (closes #56).