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/03_use_guides.dox b/docs/03_use_guides.dox
new file mode 100644
index 0000000..8aeb4f0
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+++ b/docs/03_use_guides.dox
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+/// Copyright (c) 2021 ARM Limited and Contributors. All rights reserved.
+///
+/// SPDX-License-Identifier: MIT
+///
+
+namespace armnn
+{
+/**
+@page useguides Integration Guides
+@tableofcontents
+
+This page links all guides that explain how to use Arm NN tools and how to integrate them into your own project.
+Some of these guides may not be hosted in our repository and will lead you to guides on
+https://developer.arm.com/solutions/machine-learning-on-arm/developer-material/how-to-guides
+
+
+## TfLite delegate guides
+@subpage md_delegate_IntegrateDelegateIntoPython
+
+**/
+}
\ No newline at end of file