dev-ml/ocaml-containers: new package, add 3.16

Signed-off-by: Thomas Bracht Laumann Jespersen <t@laumann.xyz>

dev-ml/ocaml-containers/Manifest

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+DIST ocaml-containers-3.16.gh.tar.gz 444432 BLAKE2B 9a07632075aea29e910456a050c64e6a64a017965b99624466efd517523d93778b7c22f0ae77d6bff8ce7993b4c54167fb539b2ab1aaf48df928d61292c0496f SHA512 856f73350e8a6da41ecd60d1c9d32c43aa0a7085a164fe27f695606d24b56a04672c6d5c99efa7e1cac416b21046b6996d0a9de82c2eba6cba7b6e82db93db43

dev-ml/ocaml-containers/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>t@laumann.xyz</email>
+    <name>Thomas Bracht Laumann Jespersen</name>
+  </maintainer>
+  <upstream>
+    <remote-id type="github">c-cube/ocaml-containers</remote-id>
+  </upstream>
+</pkgmetadata>

dev-ml/ocaml-containers/ocaml-containers-3.16.ebuild

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+# Copyright 2023-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DUNE_PKG_NAME="containers"
+inherit dune
+
+DESCRIPTION="Modular, clean and powerful extension of the OCaml standard library"
+HOMEPAGE="https://github.com/c-cube/ocaml-containers"
+SRC_URI="https://github.com/c-cube/${PN}/archive/v${PV}.tar.gz -> ${P}.gh.tar.gz"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="+ocamlopt"
+
+RDEPEND="
+	dev-ml/seq:=[ocamlopt?]
+	dev-ml/either:=[ocamlopt?]
+	dev-ml/dune-configurator:=[ocamlopt?]
+"
+DEPEND="${RDEPEND}"