Support Windows Terminal (LazoCoder#183)

* Add Windows Terminal adapter

* [Windows Terminal] Get defaultProfile on globals

* [Windows Terminal] Update with latest version
- profiles.json to settings.json
microsoft/terminal#5199
- Change current profile
microsoft/terminal#4852

* [Windows Terminal] Rename adapter to pass tests

* [Windows Terminal] Update with default profile settings
https://github.com/microsoft/terminal/blob/master/doc/user-docs/UsingJsonSettings.md#default-settings

pokemonterminal/terminal/adapters/windowsterminal.py

@@ -0,0 +1,60 @@
+import json
+import os
+import re
+
+from . import TerminalProvider as _TProv
+
+class WindowsTerminalProvider(_TProv):
+
+    def set_background_image(path: str):
+        profiles_path = os.environ['LOCALAPPDATA'] + '\\Packages\\Microsoft.WindowsTerminal_8wekyb3d8bbwe\\LocalState\\settings.json'
+        with open(profiles_path, 'r+') as json_file:
+            # read profiles.json
+            # remove comments from json to load
+            data = json.loads(WindowsTerminalProvider.comment_remover(json_file.read()))
+
+            # migrate to defaults profile settings
+            profiles = data['profiles']
+            if (isinstance(profiles, list)):
+                data['profiles'] = profiles = {
+                    'defaults': {},
+                    'list': profiles 
+                }
+
+            # update defaults profile
+            profile = profiles['defaults']
+            if (path is None):
+                del profile['backgroundImage']
+            else:
+                profile['backgroundImage'] = path
+
+            # write to file
+            # it lost orignal indent, comment, ...
+            json_file.seek(0)
+            json.dump(data, json_file, indent=4)
+            json_file.truncate()
+
+    def comment_remover(text: str) -> str:
+        def replacer(match: re.Match):
+            s = match.group(0)
+            if s.startswith('/'):
+                return " " # note: a space and not an empty string
+            else:
+                return s
+        pattern = re.compile(
+            r'//.*?$|/\*.*?\*/|\'(?:\\.|[^\\\'])*\'|"(?:\\.|[^\\"])*"',
+            re.DOTALL | re.MULTILINE
+        )
+        return re.sub(pattern, replacer, text)
+
+    def is_compatible() -> bool:
+        return "WT_SESSION" in os.environ
+
+    def change_terminal(path: str):
+        WindowsTerminalProvider.set_background_image(path)
+
+    def clear():
+        WindowsTerminalProvider.set_background_image(None)
+
+    def __str__():
+        return "Windows Terminal"