docs: New select examples

examples/views/channel_select.py

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+import discord
+
+# Channel selects (dropdowns) are a new type of select menu/dropdown Discord has added so users can select channels from a dropdown.
+
+# Defines a simple View that allows the user to use the Select menu.
+# In this view, we define the channel_select with `discord.ui.channel_select`
+# Using the decorator automatically sets `select_type` to `discord.ComponentType.channel_select`.
+class DropdownView(discord.ui.View):
+    def __init__(self):
+        super().__init__()
+
+    @discord.ui.channel_select(
+        placeholder="Select channels...", min_values=1, max_values=3
+    )  # Users can select a maximum of 3 channels in the dropdown
+    async def channel_select_dropdown(self, select, interaction):
+        await interaction.response.send_message(
+            f"You selected the following channels:"
+            + f", ".join(f"{channel.mention}" for channel in select.values)
+        )
+
+
+bot = discord.Bot(debug_guilds=[...])
+
+
+@bot.slash_command()
+async def channel_select(ctx: discord.ApplicationContext):
+    """Sends a message with our dropdown that contains a channel select."""
+
+    # Create the view containing our dropdown
+    view = DropdownView()
+
+    # Sending a message containing our View
+    await ctx.respond("Select channels:", view=view)
+
+
+@bot.event
+async def on_ready():
+    print(f"Logged in as {bot.user} (ID: {bot.user.id})")
+    print("------")
+
+
+bot.run("TOKEN")

examples/views/role_select.py

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+import discord
+
+# Role selects (dropdowns) are a new type of select menu/dropdown Discord has added so people can select server roles from a dropdown.
+
+# Defines a simple View that allows the user to use the Select menu.
+# In this view, we define the role_select with `discord.ui.role_select`
+# Using the decorator automatically sets `select_type` to `discord.ComponentType.role_select`.
+class DropdownView(discord.ui.View):
+    def __init__(self):
+        super().__init__()
+
+    @discord.ui.role_select(
+        placeholder="Select roles...", min_values=1, max_values=3
+    )  # Users can select a maximum of 3 roles in the dropdown
+    async def role_select_dropdown(self, select, interaction):
+        await interaction.response.send_message(
+            f"You selected the following roles:"
+            + f", ".join(f"{role.mention}" for role in select.values)
+        )
+
+
+bot = discord.Bot(debug_guilds=[...])
+
+
+@bot.slash_command()
+async def role_select(ctx: discord.ApplicationContext):
+    """Sends a message with our dropdown that contains a role select."""
+
+    # Create the view containing our dropdown
+    view = DropdownView()
+
+    # Sending a message containing our View
+    await ctx.respond("Select roles:", view=view)
+
+
+@bot.event
+async def on_ready():
+    print(f"Logged in as {bot.user} (ID: {bot.user.id})")
+    print("------")
+
+
+bot.run("TOKEN")