[New Package] libspatialindex (#5256)

packages/libspatialindex.rb

+require 'package'
+
+class Libspatialindex < Package
+  description 'C++ implementation of R*-tree, an MVR-tree and a TPR-tree with C API'
+  homepage 'https://libspatialindex.org/'
+  version '1.9.3'
+  compatibility 'all'
+  source_url 'https://github.com/libspatialindex/libspatialindex/archive/1.9.3.tar.gz'
+  source_sha256 '7b44340a3edc55c11abfc453bb60f148b29f569cef9e1148583e76132e9c7379'
+
+  def self.build
+    Dir.mkdir "builddir"
+    Dir.chdir "builddir" do
+      system "cmake -G 'Ninja' #{CREW_CMAKE_OPTIONS} \
+              .."
+      system "ninja"
+    end
+  end
+
+  def self.install
+    system "DESTDIR=#{CREW_DEST_DIR} ninja -C builddir install"
+  end
+end