doc: move crypto/random sections into os services

Move this documentation to a new location under OS Services section.

See #33725

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

doc/guides/index.rst

@@ -11,7 +11,6 @@ User and Developer Guides
    docs/index.rst
    coccinelle.rst
    code-relocation.rst
-   crypto/index
    flash_debug/index
    device_mgmt/index
    dts/index

doc/reference/index.rst

@@ -10,7 +10,6 @@ API Reference
    api/index.rst
    audio/index.rst
    canbus/index.rst
-   crypto/index.rst
    devicetree/index.rst
    display/index.rst
    edac/index.rst
@@ -20,7 +19,6 @@ API Reference
    modbus/index.rst
    peripherals/index.rst
    pinctrl/index.rst
-   random/index.rst
    storage/index.rst
    task_wdt/index.rst
    usb/index.rst

doc/services/crypto/api/index.rst

@@ -1,8 +1,8 @@
 .. _crypto_api:
 
 
-Crypto
+Crypto APIs
-#######
+###########
 
 Overview
 ********

doc/services/crypto/index.rst

@@ -14,3 +14,5 @@ The following crypto libraries have been included:
    :maxdepth: 1
 
    tinycrypt.rst
+   random/index.rst
+   api/index.rst

doc/services/index.rst

@@ -7,6 +7,7 @@ OS Services
    :maxdepth: 1
 
 
+   crypto/index
    debugging/index.rst
    file_system/index.rst
    formatted_output.rst