lamme2024-scientific-project/sty/floatlefttextright.sty

% https://www.developpez.net/forums/d910711/autres-langages/autres-langages/latex/mise-forme/texte-recto-figures-verso/
% Solution by Martigan on Developpez.net, adapted

\RequirePackage{afterpage}
\RequirePackage{caption}
\RequirePackage{etoolbox}
\RequirePackage{environ}
\newbool{flcontinue}
\newcommand{\flstart}{
  \booltrue{flcontinue}
  \afterpage{\flblankpage}
}

\newcommand{\flstop}{
  \boolfalse{flcontinue}
}
\newcommand\@fladdfig{\relax}
\newcommand\fladdfig[1]{\global\long\def\@fladdfig{#1}}
\newcommand\@flputfig{\@fladdfig\fladdfig{\relax}}
\newcommand\flblankpage{%
	\null
	\vfill
	  \@flputfig%
	\vfill
	%\thispagestyle{empty}%
	\clearpage%
	% \addtocounter{page}{-1}
	\ifbool{flcontinue}{
		\afterpage{\flblankpage}
	 }
 }

\iffalse
	% Example

	% Add this at the beggining of the document:
	\afterpage{\flblankpage}

	\fladdfig{%
		\centering
		\includegraphics[scale=1]{Image1}
		\caption{Test}
		\label{Ima1}
	}
\fi

% Wrap figure environment
\NewEnviron{addfigure}{%
 % \fladdfig{%
    \BODY%
  %}%
}