%! TEX program = xelatex
% vim: set spell spelllang=de:
\documentclass{scrreprt}

\KOMAoptions{
 % layout
 DIV=11,
 usegeometry,
 % fonts
 fontsize=12pt,
 parskip=half,
}

% hyphenation
\usepackage[ngerman]{babel}

% hyperlinks and pdf toc
\usepackage[unicode, hidelinks, pdfusetitle]{hyperref}
\usepackage{bookmark}

% creation of nice dates from numbers
\usepackage[useregional]{datetime2}

% dummy text
\usepackage{lipsum}

% roman font for title
%\addtokomafont{disposition}{\rmfamily}

% line height
\usepackage{setspace}

% specified page margins
\usepackage[left=25mm, right=35mm, top=25mm, bottom=25mm]{geometry}

% bibliography
\usepackage{csquotes}
\usepackage[
 style=geschichtsfrkl, % implements my citation requirements almost perfectly
]{biblatex}
\addbibresource{bibliography.bib}
\defbibheading{quellenheading}{\section*{Quellen}}

% unnumbered chapter shown in TOC
\newcommand{\unnumberedchapter}[1]{\chapter*{#1}\addcontentsline{toc}{chapter}{#1}}

\subject{Seminararbeit}
\title{Albert Göring}
\subtitle{Der gute Göring?}
\author{Simon Bruder}
\date{\DTMdisplaydate{2021}{01}{01}{-1}}

\begin{document}
\pagenumbering{gobble}
\maketitle

% toc
\tableofcontents
\clearpage

% main
\onehalfspacing

\pagenumbering{arabic}
\chapter{Einleitung}

\lipsum[1-2]

\chapter{Hauptteil}

\section{lol}

\lipsum[1]

\section{foo}

\lipsum[1]

\chapter{Schluss}

\lipsum[1-2]

% appendix
\appendix
\singlespacing

% bibliography
\unnumberedchapter{Quellen- und Literaturverzeichnis}
\nocite{*} % FIXME: remove once I actually cite something
\printbibliography[keyword=Quelle, heading=quellenheading]
\printbibliography[notkeyword=Quelle, heading=subbibliography]

\chapter*{Eigenständigkeitserklärung}

\lipsum[1-2]

\end{document}