StandaloneMmPkg: Add EDK2 Core CI support

Bugzilla: 3150 (https://bugzilla.tianocore.org/show_bug.cgi?id=3150)

The TianoCore EDKII project has introduced a Core CI infrastructure
using TianoCore EDKII Tools PIP modules:
  * https://pypi.org/project/edk2-pytool-library/
  * https://pypi.org/project/edk2-pytool-extensions/

The edk2\.pytool\Readme.md provides information to configure the
environment and to run local builds.

This patch defines the necessary settings for enabling the Core CI
builds for StandaloneMmPkg.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>

StandaloneMmPkg/StandaloneMmPkg.ci.yaml

@@ -0,0 +1,84 @@
+## @file
+#  CI configuration for StandaloneMmPkg
+#
+#  Copyright (c) 2020 - 2021, Arm Limited. All rights reserved.<BR>
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+{
+    ## options defined .pytool/Plugin/CompilerPlugin
+    "CompilerPlugin": {
+        "DscPath": "StandaloneMmPkg.dsc"
+    },
+
+    ## options defined .pytool/Plugin/HostUnitTestCompilerPlugin
+    "HostUnitTestCompilerPlugin": {
+        "DscPath": "" # Don't support this test
+    },
+
+    ## options defined .pytool/Plugin/CharEncodingCheck
+    "CharEncodingCheck": {
+        "IgnoreFiles": []
+    },
+
+    ## options defined .pytool/Plugin/DependencyCheck
+    "DependencyCheck": {
+        "AcceptableDependencies": [
+            "ArmPkg/ArmPkg.dec",
+            "EmbeddedPkg/EmbeddedPkg.dec",
+            "StandaloneMmPkg/StandaloneMmPkg.dec",
+            "MdeModulePkg/MdeModulePkg.dec",
+            "MdePkg/MdePkg.dec"
+        ],
+        # For host based unit tests
+        "AcceptableDependencies-HOST_APPLICATION":[
+            "UnitTestFrameworkPkg/UnitTestFrameworkPkg.dec"
+        ],
+        # For UEFI shell based apps
+        "AcceptableDependencies-UEFI_APPLICATION":[],
+        "IgnoreInf": []
+    },
+
+    ## options defined .pytool/Plugin/DscCompleteCheck
+    "DscCompleteCheck": {
+        "IgnoreInf": [],
+        "DscPath": "StandaloneMmPkg.dsc"
+    },
+
+    ## options defined .pytool/Plugin/HostUnitTestDscCompleteCheck
+    "HostUnitTestDscCompleteCheck": {
+        "IgnoreInf": [""],
+        "DscPath": "" # Don't support this test
+    },
+
+    ## options defined .pytool/Plugin/GuidCheck
+    "GuidCheck": {
+        "IgnoreGuidName": [],
+        "IgnoreGuidValue": [],
+        "IgnoreFoldersAndFiles": [],
+        "IgnoreDuplicates": [],
+    },
+
+    ## options defined .pytool/Plugin/LibraryClassCheck
+    "LibraryClassCheck": {
+        "IgnoreHeaderFile": []
+    },
+
+    ## options defined .pytool/Plugin/SpellCheck
+    "SpellCheck": {
+        "AuditOnly": False,
+        "IgnoreFiles": [],           # use gitignore syntax to ignore errors
+                                     # in matching files
+        "ExtendWords": [
+            "Bsymbolic",
+            "FwVol",
+            "mpidr",
+            "mstrict",
+            "schedulable",
+            "StandaloneMMCore",
+        ],           # words to extend to the dictionary for this package
+        "IgnoreStandardPaths": [],   # Standard Plugin defined paths that
+                                     # should be ignore
+        "AdditionalIncludePaths": [] # Additional paths to spell check
+                                     # (wildcards supported)
+    }
+}