IVGCVSW-5605 Doxygen: Add the TfLite Delegate to Doxygen docu

 * Moves TensorFlowLiteDelegateSupport.md to doxygen
 * Renames a few .dox files to represent the structure of the documentation
 * Adds sections for build and use guides
 * Integrates markdown guides for the delegate into doxygen

Signed-off-by: Jan Eilers <jan.eilers@arm.com>
Change-Id: I68b7a29239be88c0617da9bdfce5323ebf26f5bc
diff --git a/docs/01_00_software_tools.dox b/docs/01_00_software_tools.dox
new file mode 100644
index 0000000..416e226
--- /dev/null
+++ b/docs/01_00_software_tools.dox
@@ -0,0 +1,58 @@
+/// Copyright (c) 2021 ARM Limited and Contributors. All rights reserved.
+///
+/// SPDX-License-Identifier: MIT
+///
+
+namespace armnn
+{
+/**
+@page swtools Software Tools
+
+On this page you can find all software tools contained in the Arm NN repository. You will find links to how-to guides and
+other helpful information in each section.
+
+@subpage delegate
+
+@subpage parsers
+
+@subpage md_python_pyarmnn_README
+
+@subpage serializer
+
+@subpage deserializer
+
+@subpage md_src_armnnQuantizer_README
+
+@subpage md_src_armnnConverter_README
+
+@subpage md_tests_ImageCSVFileGenerator_README
+
+@subpage md_tests_ImageTensorGenerator_README
+
+@subpage md_tests_ModelAccuracyTool-Armnn_README
+**/
+}
+
+
+/// Create pages for each tool so they appear nicely in the doxygen tree-view. Subpages are not listed there.
+///
+/// Note: The parser, serializer and deserializer pages are created in 01_parsers.dox or 02_deserializer_serializer.dox
+namespace armnn
+{
+/**
+
+@page md_python_pyarmnn_README PyArmNN
+
+@page md_src_armnnQuantizer_README Quantizer
+
+@page md_src_armnnConverter_README Converter
+
+@page md_tests_ModelAccuracyTool-Armnn_README ModelAccuracyTool
+
+@page md_tests_ImageCSVFileGenerator_README ImageCSVFileGenerator
+
+@page md_tests_ImageTensorGenerator_README ImageTensorGenerator
+
+**/
+}
+