doc: move hardware emulator docs to hardware section

HW emulation goes under hardware support.

Signed-off-by: Anas Nashif <[email protected]>

Author: nashif

doc/guides/index.rst

@@ -9,7 +9,6 @@ User and Developer Guides
    coccinelle.rst
    code-relocation.rst
    flash_debug/index
-   emulator/index.rst
    platformio/index.rst
    portability/index.rst
    porting/index

doc/guides/emulator/img/app.png renamed to doc/hardware/emulator/img/app.png

@@ -7,5 +7,6 @@ Hardware Support
    :maxdepth: 1
 
    arch/index.rst
+   emulator/index.rst
    peripherals/index.rst
    pinctrl/index.rst