split zelda3-data ROM file fetching into a separate zelda3-rom port

based on an intial patch by espie@
ok sthen@

games/zelda3-rom/Makefile

@@ -0,0 +1,34 @@
+COMMENT =	zelda3 ROM image
+
+DISTNAME =	zelda3-rom-0.0
+
+DISTFILES =	zelda3.sfc
+
+CATEGORIES =	games
+
+HOMEPAGE =	https://www.nintendo.com
+
+FETCH_MANUALLY += "zelda3.sfc has sha256 checksum"
+FETCH_MANUALLY += "66871d66be19ad2c34c927d6b14cd8eb6fc3181965b6e517cb361f7316009cfb"
+FETCH_MANUALLY += "and must be placed into ${DISTDIR}."
+FETCH_MANUALLY += "It can be extracted from a retail SNES cartridge using"
+FETCH_MANUALLY += "tools such as https://github.com/sanni/cartreader"
+
+PERMIT_PACKAGE =	proprietary ROM image
+PERMIT_DISTFILES =	${PERMIT_PACKAGE}
+
+EXTRACT_ONLY =
+
+WRKDIST = ${WRKDIR}
+
+NO_BUILD = Yes
+NO_TEST = Yes
+
+post-extract:
+	ln -sf ${DISTDIR}/zelda3.sfc ${WRKDIR}
+
+do-install:
+	${INSTALL_DATA_DIR} ${PREFIX}/share/zelda3
+	${INSTALL_DATA} ${WRKDIR}/zelda3.sfc ${PREFIX}/share/zelda3/zelda3.sfc
+
+.include <bsd.port.mk>

games/zelda3-rom/distinfo

@@ -0,0 +1,2 @@
+SHA256 (zelda3.sfc) = ZocdZr4ZrSw0ySfWsUzY62/DGBlltuUXyzYfcxYAnPs=
+SIZE (zelda3.sfc) = 1048576

games/zelda3-rom/pkg/DESCR

@@ -0,0 +1,3 @@
+Zelda 3 - A Link to the Past (US) ROM image.
+
+Copyright 1991, 1992 Nintendo.

games/zelda3-rom/pkg/PLIST

@@ -0,0 +1,2 @@
+share/zelda3/
+share/zelda3/zelda3.sfc