Switch to vbuild

[Eeems]

Switches build system to use vbuild instead of abuild directly. This provides the following:

• Faster builds due to using a base builder image with tools already installed
• category and upstream_author not needing to be prefixed with a _
• install scripts directly in the recipe file

All APKBUILD files have been renamed to VELBUILD and updated with the following:

• Removed _ prefix from category and upstream_author
• Removed install variable if present.
• All install scripts have been removed and the contents placed in the appropriate functions inside the VELBUILD file.

Scripts, README, and workflow have all been updated to reference VELBUILD instead of APKBUILD and to use vbuild.

The qmd template in the readme was updated to use $_commit instead of directly referencing the main branch.

Until Eeems/vbuild#7 is resolved, linting will not enforce tab indentation trailing whitespace or quoted integers.

Until Eeems/vbuild#8 is resolved, buildir= cannot be used.