audio/gradio: unbreak build, undeprecate

• Switch to USES=sqlite
• Add missing USES=pkgconfig
• Remove USES=ninja because meson implicitly uses ninja
• Sort USES and USE_GNOME
• Add missing plugins in USE_GSTREAMER1
• Add GLIB_SCHEMAS to install properly de.haeckerfelix.gradio.gschema.xml
• Bump PORTREVISION

PR: 225895
Submitted by: cpm
Reported by: Sergio Lenzi <lenzi.sergio@gmail.com>
Approved by: arved (maintainer)