Re-organize directory structure (#4971)

See discussion in #2491

Co-authored-by: Ivan Levkivskyi <ilevkivskyi@dropbox.com>

stubs/emoji/METADATA.toml

@@ -0,0 +1,2 @@
+version = "0.1"
+python2 = true

stubs/emoji/emoji/__init__.pyi

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+from .core import (
+    demojize as demojize,
+    emoji_count as emoji_count,
+    emoji_lis as emoji_lis,
+    emojize as emojize,
+    get_emoji_regexp as get_emoji_regexp,
+)
+from .unicode_codes import (
+    EMOJI_ALIAS_UNICODE as EMOJI_ALIAS_UNICODE,
+    EMOJI_UNICODE as EMOJI_UNICODE,
+    UNICODE_EMOJI as UNICODE_EMOJI,
+    UNICODE_EMOJI_ALIAS as UNICODE_EMOJI_ALIAS,
+)

stubs/emoji/emoji/core.pyi

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+from typing import Dict, List, Optional, Pattern, Text, Tuple, Union
+
+_DEFAULT_DELIMITER: str
+
+def emojize(string: str, use_aliases: bool = ..., delimiters: Tuple[str, str] = ...) -> str: ...
+def demojize(string: str, delimiters: Tuple[str, str] = ...) -> str: ...
+def get_emoji_regexp() -> Pattern[Text]: ...
+def emoji_lis(string: str) -> List[Dict[str, Union[int, str]]]: ...
+def emoji_count(string: str) -> int: ...

stubs/emoji/emoji/unicode_codes.pyi

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+from typing import Dict, Text
+
+EMOJI_ALIAS_UNICODE: Dict[Text, Text]
+EMOJI_UNICODE: Dict[Text, Text]
+UNICODE_EMOJI: Dict[Text, Text]
+UNICODE_EMOJI_ALIAS: Dict[Text, Text]