dev-libs/argtable3: new package, add 3.3.1

Closes: https://bugs.gentoo.org/709630
Signed-off-by: Michael Orlitzky <mjo@gentoo.org>

dev-libs/argtable3/Manifest

@@ -0,0 +1 @@
+DIST argtable-v3.3.1.tar.gz 177567 BLAKE2B fe4a7a45097fd829aad05bd2998c1188c5b72de5c77763e3739827c26b8a8d87b9e80128445ff6429fc9cc11be93f6067abe7ed046235cfab00d19d7f0c8f075 SHA512 3c6c3054365746c311081d349970a42c347587260a87b38111f324ee0f9d5e5c277a50f27cc0832f866ae596054c94666108950599b3ded98db638fb41f58ff9

dev-libs/argtable3/argtable3-3.3.1.ebuild

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+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+DESCRIPTION="ANSI C command-line parsing library based on getopt"
+HOMEPAGE="https://www.argtable.org/"
+SRC_URI="https://github.com/argtable/${PN}/releases/download/v${PV}/argtable-v${PV}.tar.gz"
+S="${WORKDIR}/argtable-v${PV}"
+
+# Their LICENSE file is a concatenation; thus is our variable:
+#
+#   * argtable3 itself: BSD
+#   * FreeBSD getopt: BSD-2
+#   * TCL/TK: tcltk
+#   * Hash table: BSD
+#   * Better string: BSD
+#
+LICENSE="BSD BSD-2 tcltk"
+
+SLOT="0"
+KEYWORDS="~amd64 ~riscv"
+IUSE="examples test"
+RESTRICT="!test? ( test )"
+
+src_configure() {
+	local mycmakeargs=(
+		-DARGTABLE3_ENABLE_TESTS=$(usex test)
+		-DARGTABLE3_ENABLE_EXAMPLES=OFF  # don't _build_ the examples
+	)
+	cmake_src_configure
+}
+
+src_install() {
+	cmake_src_install
+
+	if use examples; then
+		docinto examples
+		dodoc examples/*.c
+		dodoc -r examples/multicmd
+	fi
+}

dev-libs/argtable3/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="person">
+    <email>mjo@gentoo.org</email>
+    <name>Michael Orlitzky</name>
+  </maintainer>
+
+  <upstream>
+    <remote-id type="github">argtable/argtable3</remote-id>
+  </upstream>
+</pkgmetadata>