Land code coverage tool for OSS (#43778)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/43778

Move code_coverage_tool from experimental folder to caffe2/tools folder.

Delete `TODO` and fb-related code.

Test Plan: Test locally

Reviewed By: malfet

Differential Revision: D23399983

fbshipit-source-id: 92316fd3cc88409d087d2dc6ed0be674155b3762

tools/code_coverage/package/util/setting.py

@@ -0,0 +1,62 @@
+import os
+from enum import Enum
+from typing import Dict, List, Set
+
+
+# <project folder>
+HOME_DIR = os.environ["HOME"]
+setting_file_path = os.path.realpath(__file__)
+SCRIPT_FOLDER = os.path.join(
+    os.path.dirname(setting_file_path), os.path.pardir, os.path.pardir
+)
+
+
+# <profile folder>
+PROFILE_DIR = os.path.join(SCRIPT_FOLDER, "profile")
+JSON_FOLDER_BASE_DIR = os.path.join(PROFILE_DIR, "json")
+MERGED_FOLDER_BASE_DIR = os.path.join(PROFILE_DIR, "merged")
+SUMMARY_FOLDER_DIR = os.path.join(PROFILE_DIR, "summary")
+
+# <log path>
+LOG_DIR = os.path.join(PROFILE_DIR, "log")
+
+
+# test type, DO NOT change the name, it should be consistent with [buck query --output-attribute] result
+class TestType(Enum):
+    CPP: str = "cxx_test"
+    PY: str = "python_test"
+
+
+class Test:
+    name: str
+    target_pattern: str
+    test_set: str  # like __aten__
+    test_type: TestType
+
+    def __init__(
+        self, name: str, target_pattern: str, test_set: str, test_type: TestType
+    ) -> None:
+        self.name = name
+        self.target_pattern = target_pattern
+        self.test_set = test_set
+        self.test_type = test_type
+
+
+TestList = List[Test]
+TestStatusType = Dict[str, Set[str]]
+
+
+# option
+class Option:
+    need_build: bool = False
+    need_run: bool = False
+    need_merge: bool = False
+    need_export: bool = False
+    need_summary: bool = False
+    need_pytest: bool = False
+
+
+# test platform
+class TestPlatform(Enum):
+    FBCODE: str = "fbcode"
+    OSS: str = "oss"