feat: start dotnet detection (#955)

* feat: start dotnet detection

* Apply suggestions from code review

Co-authored-by: Willi Ballenthin <willi.ballenthin@gmail.com>

* refactor: dn instead of dotnet

* refactor: format branches, extractor reorg

* refactor: format selection and dotnet detect

* feat: get format, arch, os

* refactor: log errors and exceptions

* ci: also test and build for dotnet-main dev

* fix: import path

* fix: circular dep

* fix: remove buf argument
feat: get runtime meta data

* fix: log unsupported runtime error

* fix: type ignore

Co-authored-by: Willi Ballenthin <willi.ballenthin@gmail.com>

tests/test_dotnet_features.py

@@ -0,0 +1,25 @@
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
+# Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at: [package root]/LICENSE.txt
+# Unless required by applicable law or agreed to in writing, software distributed under the License
+#  is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and limitations under the License.
+
+# b9f5bd514485fb06da39beff051b9fdc
+
+import pytest
+import fixtures
+from fixtures import *
+from fixtures import parametrize
+
+import capa.features.file
+
+
+@parametrize(
+    "sample,scope,feature,expected",
+    fixtures.FEATURE_PRESENCE_TESTS_DOTNET,
+    indirect=["sample", "scope"],
+)
+def test_dnfile_features(sample, scope, feature, expected):
+    fixtures.do_test_feature_presence(fixtures.get_pefile_extractor, sample, scope, feature, expected)