Add release notes (#374)

* Add release notes NEWS.Rd file

* Fix brackets in NEWS.Rd

Author: lazappi

inst/NEWS.Rd

@@ -0,0 +1,31 @@
+\name{NEWS}
+\title{News for Package \pkg{anndataR}}
+
+\section{Version 1.0.0, Bioconductor 3.32 Release (October 2025)}{
+  \subsection{Introducing anndataR!}{
+    \itemize{
+      \item{
+        \pkg{anndataR} brings the AnnData object to R. It enables native reading
+        and writing of H5AD files and conversion to/from
+        \code{SingleCellExperiment} and \code{Seurat} objects.
+      }
+    }
+  }
+  \subsection{Features}{
+    \itemize{
+      \item{
+        An \pkg{R6} class to work with \code{AnnData} objects in R (either
+        in-memory or on-disk)
+      }
+      \item{
+        Natively read/write H5AD files without needing a Python environment
+      }
+      \item{
+        Convert to/from \code{SingleCellExperiment} objects
+      }
+      \item{
+        Convert to/from \code{Seurat} objects
+      }
+    }
+  }
+}