shells/nushell: Remove option DATAFRAME; Add Makefile.version

The DataFrame functionality will is now provided by
the plugin nu_plugin_polars.

Makefile.version is to support Nushell plugins.

shells/nushell/Makefile

 PORTNAME=	nushell
 DISTVERSION=	0.98.0
+PORTREVISION=	1
 CATEGORIES=	shells
 
 MAINTAINER=	yuri@FreeBSD.org
@@ -711,12 +712,6 @@ OPENSSLLIB=	/usr/lib
 
 PLIST_FILES=	bin/nu
 
-OPTIONS_DEFINE=		DATAFRAME
-
-DATAFRAME_DESC=		Include the dataframe feature
-DATAFRAME_VARS=		CARGO_BUILD_ARGS+=--features=dataframe
-DATAFRAME_BROKEN=	see https://github.com/nushell/nushell/issues/7665
-
 .include <bsd.port.options.mk>
 
 .if ${ARCH} == powerpc

shells/nushell/Makefile.version

+# this file is provided for nushell users
+
+NUSHELL_VER=0.98.0