Update Feature Request Issue templates

Created a template for feature request issues.

Update Bug Report template

Fixed compilation issue in PVRCore/texture/TextureHeader.h seen when compiling with Visual Studio 2019 reported by rcdailey. Adding an include for <string>  fixes the issue.

Using logLevel param instead of undefined 'error' variable.

The pipeline cache object allocated by the UIRenderer to create
the sprite rendering pipeline is not deallocated in the
destroy function. This causes the Vulkan validation layers to
output a message and terminate the application with an exception
when running in debug mode.

Fixes:
Added Android surface creation instance's extension string
Updated PlatformContextVulkanGlue.cpp
Fixed bug in platform context allocateImageDeviceMemory function
Updated NativeLibraryVulkanGlue.h
Added GetPhysicalDeviceFormatProperties function pointer declaration
Updated NativeLibraryVulkanGlue.cpp
Added GetPhysicalDeviceFormatProperties and XLIB function pointers
Updated TextureUtilsVk.cpp
Cleaned up the commandbuffer begin info
Updated ImageUtilsVk.cpp
Updated CommandBufferVk.cpp
Updated ApiCommandsGles.cpp
Updated ContextGles.h
Updated DescriptorSetGles.h
Added internal texture units support for  Descritpor set es2, so the user dont have to set the via setUniform
Updated DescriptorSet.h
Descriptor set updated for es2 texture unit support
Fixed build issue from last commit (texture units framework support for gles)
Added ./Builds/Include/GLES3/glesRayAPI.h to .gitignore
Created ws.mak
Created platform.mak
Created api.mak
Added ArmV8 libs
Updated CommandBufferVk.cpp
Vullkan Command, bind pipeline should be VK_PIPELINE_BIND_POINT_COMPUTE

Some general stability fixes
Some warnings removed
Removed the release() function from the smart pointer to avoid confusion with std::auto_ptr release() semantics
Changed linux optimization flag from O3 to O2 that was causing problems with GCC <4.9 and the prebuild binaries
Fixed a mismatched malloc/delete

Brand-new Vulkan Backend
Several fixes and updates in the Framework, including:
  Updates to the RefCountedResource class to allow embedding
  Performance optimizations
  Breaking up of the PVRApi into the PVRNativeApi(API bindings) and PVRApi(API abstraction)
  Several interface and implementation updates of PVRApi to improve OpenGL ES and Vulkan compatibility
  Ported HelloAPI, IntroducingPVRShell, IntroducingPVRAssets, IntroducingPVRApi, Bumpmap, Skinning, DeferredShading to Vulkan
  Created new Vulkan specific demo - the GnomeHorder (Multithreaded rendering)

* Ported a core of relevant SDK examples to be targeting the new PowerVR Framework
* Examples are still classified by beginner, intermediate and advanced levels
* Examples are now built per API family instead of per API version. At the moment, OpenGL ES Programmable pipeline (2.0+) is provided.
* Platform max supported API version is now checked at runtime, usually creating the latest possible OpenGL context version unless otherwise instructed
* Revamped the look and feel of the SDK examples by using new themes and assets

* Brand new PowerVR Framework, replacing the PVRShell and PVRTools. The new framework consists of separate libraries providing groups of functionality as modules. These modules are PVRCore, PVRAssets, PVRShell, PVRPlatformGlue, PVRApi, PVRUIRenderer and PVRCamera
* PVRCore provides support for the other modules
* PVRShell provides platform abstraction/entry point (replaces the old PVRShell)
* PVRPlatformGlue provides platform/API joining functionality to PVRShell
* PVRApi provides an API abstraction on top of which to build the example (replacing PVRTools)
* PVRUIRenderer provides 2D element drawing/layout functions (replaces the old tools Print3D)
* PVRCamera provides HW Camera abstractions (replaces the CameraModule)
* Uses C++ (namespacing, smart pointers, OOP), the C++ standard library, GLM for maths

* Updated the PowerVR SDK Browser in line with the changes brought about to the PowerVR SDK
* Source code documentation for the PowerVR Framework is packaged in their respective modules, as well as being accessible through the PowerVR SDK Browser

The 3.5 SDK is distributed under the MIT license

Release notes:

* Added support for Android arm64-v8a, x86_64 and mips64.

* PVRScopeExample and PVRScopeRemote: updated for PVRScope changes.
* PVRScopeExample: CPVRScopeGraph::SetActiveGroup() now accepts a group number even if there are no counters in that group, if there are higher groups. This allows PVRScopeExample to pass an empty group, to reach a higher, populated group number. Allows for ‘invalid’ group numbers – i.e. SW counters.
* PVRScopeRemote:
** Make use of PVRScopeComms new support for nested begin/ends.
** Utilise the CPPLProcessingScoped helper class where appropriate.
** Use the optional pplWaitForConnection() function.
** Instrumented all remaining functions in the app (LoadTextures, LoadShaders, LoadVbos), using CPPLProcessingScoped. Also made use of the __FUNCTION__ define.
* OGLES3ProceduralTextures: corrected input flags for glMemoryBarrier.

* CPVRTPrint3D: Fixed out-of-bounds access.

* CPVRTPFXEffect: Fixed the Destroy() function to destroy the texture data.
* Fixed a bug in the implementation of PVRTMap where calling ‘Remove’ might have incorrect behaviour.

* The 3.4 SDK is now distributed under the MIT license