add some jdbc-postgresql stuff from a pr

dev-java/waffle-jna/Manifest

@@ -0,0 +1 @@
+DIST waffle-parent-3.3.0.tar.gz 2147273 BLAKE2B a4f9c06898c50616013870bb383632d0b97e4f527da9b7b1acad9945f275181844d94b6533891a371f588115f60efdf791d5f64e03f938950a8dd48415f1f56f SHA512 e09154761dc5902e97b9dc57c9523bffe401fce33797346bbd5595390db3adaf5eed27d2ac7f98b7504aeb471c5f1a0c0a5104bd819a937e15c67123ecdd5891

dev-java/waffle-jna/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="project">
+		<email>java@gentoo.org</email>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">Waffle/waffle</remote-id>
+	</upstream>
+</pkgmetadata>

dev-java/waffle-jna/waffle-jna-3.3.0.ebuild

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+# Copyright 2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+JAVA_PKG_IUSE="doc source test"
+MAVEN_ID="com.github.waffle:waffle-jna:${PV}"
+JAVA_TESTING_FRAMEWORKS="junit-4"
+
+inherit java-pkg-2 java-pkg-simple
+
+DESCRIPTION="Enable drop-in Windows Single Sign On for popular Java web servers"
+HOMEPAGE="https://waffle.github.io/waffle/"
+SRC_URI="https://github.com/Waffle/waffle/archive/waffle-parent-${PV}.tar.gz"
+S="${WORKDIR}/waffle-waffle-parent-${PV}/Source/JNA/waffle-jna"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+RESTRICT="test" #839681
+
+DEPEND="
+	dev-java/caffeine:0
+	dev-java/checker-framework-qual:0
+	dev-java/jakarta-servlet-api:4
+	dev-java/jna:4
+	dev-java/slf4j-api:0
+	>=virtual/jdk-1.8:*
+	test? ( dev-java/junit:5 )
+"
+RDEPEND=">=virtual/jre-1.8:*"
+
+JAVA_AUTOMATIC_MODULE_NAME="waffle.jna"
+JAVA_CLASSPATH_EXTRA="
+	caffeine
+	checker-framework-qual
+	jakarta-servlet-api-4
+	jna-4
+	slf4j-api
+"
+JAVA_RESOURCE_DIR="src/main/resources"
+JAVA_SRC_DIR="src/main/java"
+JAVA_TEST_GENTOO_CLASSPATH="
+	assertj-core-3
+	junit-5
+"
+JAVA_TEST_SRC_DIR="src/test/java"