Add conda-forge docs (#959)

Co-authored-by: Michael Smith <[email protected]>

Author: github-actions[bot]

en/download.txt

@@ -126,6 +126,13 @@ Windows
 
 .. _`Gisinternals`: http://www.gisinternals.com/sdk/ 
 
+`Conda-Forge`_
+    A binary distribution of MapServer and components for Win64 environments, including conda
+    builds of GDAL/OGR and PROJ. Also includes mysql and postgis native drivers and includes
+    python mapscript.
+
+.. _`Conda-Forge`: https://anaconda.org/conda-forge/mapserver
+
 .. _linux:
 
 Linux
@@ -187,6 +194,12 @@ Linux
 
 .. _`UbuntuGIS`: https://wiki.ubuntu.com/UbuntuGIS
 
+`Conda-Forge`_
+    A binary distribution of MapServer and components for Linux environments including x64, 
+    ppc64le, and aarch64 and including conda builds of GDAL/OGR and PROJ. Also includes mysql 
+    and postgis native drivers and includes python mapscript.
+
+.. _`Conda-Forge`: https://anaconda.org/conda-forge/mapserver
 
 .. _osx:
 
@@ -198,6 +211,13 @@ Mac OS X
 
 .. _`Homebrew`: https://brew.sh/
 
+`Conda-Forge`_
+    A binary distribution of MapServer and components for MacOS environments including x64 and arm64
+    and including conda builds of GDAL/OGR and PROJ. Also includes mysql and postgis native drivers 
+    and includes python mapscript.
+
+.. _`Conda-Forge`: https://anaconda.org/conda-forge/mapserver
+
 .. deprecated:: 2012
 
     `Kyng Chaos`_