CodeGen from PR 12337 in Azure/azure-rest-api-specs

[Hub Generated] Review request for Microsoft.MixedReality to add version stable/2021-01-01 (#12337)

* Adds base for updating Microsoft.MixedReality from version preview/2020-04-06-preview to version 2021-01-01

* Updates readme

* Updates API version in new specs and examples

* update proxy and remote rendering

* add description

* add security definitions

* revert security definitions

* add systemdata

* run prettier

* move systemdata to remote-rendering.json

* switch to use v1 types

* add spatial anchors accounts

* add x-ms-secret to dev keys

* replace values with ***

* suppress secret_property

Author: SDKAuto

schemas/2019-02-28-preview/Microsoft.MixedReality.json

@@ -112,4 +112,4 @@
       "description": "Spatial Anchors Account Customize Properties"
     }
   }
-}
+}

schemas/2019-12-02-preview/Microsoft.MixedReality.json

@@ -192,4 +192,4 @@
       "description": "Common Properties shared by Mixed Reality Accounts"
     }
   }
-}
+}

schemas/2020-04-06-preview/Microsoft.MixedReality.json

@@ -110,4 +110,4 @@
       }
     }
   }
-}
+}

schemas/2020-05-01/Microsoft.MixedReality.json

@@ -112,4 +112,4 @@
       "description": "Common Properties shared by Mixed Reality Accounts"
     }
   }
-}
+}