devel/ruby-observer: add package version 0.1.2

This pacakge is required by newer graphics/ruby-RMagick package.

Observer

The Observer pattern (also known as publish/subscribe) provides a simple
mechanism for one object to inform a set of interested third-party objects
when its state changes.

devel/ruby-observer/DESCR

@@ -0,0 +1,5 @@
+Observer
+
+The Observer pattern (also known as publish/subscribe) provides a simple
+mechanism for one object to inform a set of interested third-party objects
+when its state changes.

devel/ruby-observer/Makefile

@@ -0,0 +1,14 @@
+# $NetBSD: Makefile,v 1.1 2024/02/05 15:47:12 taca Exp $
+
+DISTNAME=	observer-0.1.2
+CATEGORIES=	devel
+
+MAINTAINER=	pkgsrc-users@NetBSD.org
+HOMEPAGE=	https://github.com/ruby/observer
+COMMENT=	Implementation of the Observer object-oriented design pattern
+LICENSE=	2-clause-bsd OR ruby-license
+
+USE_LANGUAGES=	# none
+
+.include "../../lang/ruby/gem.mk"
+.include "../../mk/bsd.pkg.mk"

devel/ruby-observer/PLIST

@@ -0,0 +1,14 @@
+@comment $NetBSD: PLIST,v 1.1 2024/02/05 15:47:12 taca Exp $
+${GEM_HOME}/cache/${GEM_NAME}.gem
+${GEM_LIBDIR}/.github/dependabot.yml
+${GEM_LIBDIR}/.github/workflows/test.yml
+${GEM_LIBDIR}/.gitignore
+${GEM_LIBDIR}/Gemfile
+${GEM_LIBDIR}/LICENSE.txt
+${GEM_LIBDIR}/README.md
+${GEM_LIBDIR}/Rakefile
+${GEM_LIBDIR}/bin/console
+${GEM_LIBDIR}/bin/setup
+${GEM_LIBDIR}/lib/observer.rb
+${GEM_LIBDIR}/observer.gemspec
+${GEM_HOME}/specifications/${GEM_NAME}.gemspec

devel/ruby-observer/distinfo

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+$NetBSD: distinfo,v 1.1 2024/02/05 15:47:12 taca Exp $
+
+BLAKE2s (observer-0.1.2.gem) = 0e05a4bb39f27cbda76aab0c147f1fec6d39f1016502b7642900f7a82afe54d7
+SHA512 (observer-0.1.2.gem) = 98457341cefee186229a24745687f5cc0afbbf7397747e7d33e4009564f302d66c269c88ea7fe773a90bfac992bb6c3b5f764ccc737fc6022f446df0c2a8aa55
+Size (observer-0.1.2.gem) = 9728 bytes