wip(thesis): introduce CDNN into abbreviations

src/thesis/abbreviations.tex

@@ -5,6 +5,7 @@
 \begin{table}[ht]
   \centering
   \begin{tabularx}{\textwidth} {ll}
+    CDNN & Classification deep neural network \\
     GUM & Guide to the expression of uncertainty in
     measurement~\citep{jcgm_evaluation_2009} \\
     VIM & International vocabulary of metrology — Basic and general concepts and