Merge branch '241-add-build-block-template-in-group-tools' into 'master'

Resolve "add build-block template in group Tools"

Closes #241

See merge request Pmodules/buildblocks!355

Tools/template/build

+#!/usr/bin/env modbuild
+
+pbuild::add_to_group 'Tools'
+
+pbuild::set_download_url \
+	"https://sourceforge.net/projects/gnuplot/files/$P/$V/$P-$V.tar.gz"
+pbuild::set_sha256sum 'gnuplot-5.2.4.tar.gz:1515f000bd373aaa53b16183f274189d4f5e0ae47d22f434857933d16a4770cb'
+pbuild::install_docfiles 'Copyright' 'NEWS' 'README'
+
+pbuild::pre_configure() {
+	pbuild::add_configure_args '--with-latex=no'
+	pbuild::add_configure_args '--with-qt=no'
+}
+# Local Variables:
+# mode: sh
+# sh-basic-offset: 8
+# tab-width: 8
+# End:

Tools/template/files/variants

+gnuplot/5.2.4 unstable b:gcc/10.3.0

Tools/template/modulefile

+#%Pmodule
+
+module-whatis		"portable command-line driven graphing utility"
+module-url		"http://www.gnuplot.info/"
+module-license		"See \$GNUPLOT_DIR/share/doc/gnuplot/Copyright"
+module-maintainer	"Achim Gsell <achim.gsell@psi.ch>"
+
+module-help		"
+Gnuplot is a portable command-line driven graphing utility for Linux,
+OS/2, MS Windows, OSX, VMS, and many other platforms. The source code
+is copyrighted but freely distributed (i.e., you don't have to pay for
+it). It was originally created to allow scientists and students to
+visualize mathematical functions and data interactively, but has grown
+to support many non-interactive uses such as web scripting. It is also
+used as a plotting engine by third-party applications like Octave.
+Gnuplot has been supported and under active development since 1986. 
+"
+