audio/pulseeffects: Deprecate and set expiration date to 2023-06-30

Listed a BROKEN for over a year and abandoned upstream. New project
upstream is called Easy Effects and targets PipeWire.

Reference: https://github.com/wwmm/easyeffects

Approved by:	portmgr (build intrastructure)

audio/pulseeffects/Makefile

@@ -11,6 +11,9 @@ WWW=		https://github.com/wwmm/pulseeffects
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 
+DEPRECATED=	Broken for almost a year and abandoned upstream
+EXPIRATION_DATE=2023-06-30
+
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}cairo>0:graphics/py-cairo@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}gstreamer1>=1.4.0:multimedia/py-gstreamer1@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}numpy>0:math/py-numpy@${PY_FLAVOR} \