Add smart plugins. (#28)

* plugins

* plugins

* add handlers attr for plugins

* finish smart-plugins

* auto load when run

* add filters at first

* add plugins example

examples/smart_plugins/main.py

@@ -0,0 +1,8 @@
+import logging
+from tgram import TgBot
+
+logging.basicConfig(level=logging.DEBUG)
+
+bot = TgBot("API_TOKEN_HERE", parse_mode="Markdown", plugins="./plugins")
+
+bot.run_for_updates()

examples/smart_plugins/plugins/callback.py

@@ -0,0 +1,7 @@
+from tgram import TgBot, filters
+from tgram.types import CallbackQuery
+
+
+@TgBot.on_callback_query(filters.regex("^fine$"))
+def callback(bot: TgBot, query: CallbackQuery) -> bool:
+    return query.answer("Good to know!", show_alert=True)

examples/smart_plugins/plugins/start.py

@@ -0,0 +1,13 @@
+from tgram import TgBot, filters
+
+from tgram.types import Message, InlineKeyboardMarkup, InlineKeyboardButton
+
+
+@TgBot.on_message(filters.command("start") & filters.private)
+async def on_start_message(bot: TgBot, m: Message) -> Message:
+    return await m.reply_text(
+        f"Hi {m.from_user.mention}!, How are you today?",
+        reply_markup=InlineKeyboardMarkup(
+            [[InlineKeyboardButton("I'm fine", callback_data="fine")]]
+        ),
+    )