feat: implement Guild.fetch_role

Author: JustaSqu1d

discord/guild.py

@@ -2814,6 +2814,30 @@ async def fetch_roles(self) -> list[Role]:
         """
         data = await self._state.http.get_roles(self.id)
         return [Role(guild=self, state=self._state, data=d) for d in data]
+    
+    async def fetch_role(self, role_id: int) -> Role:
+        """|coro|
+
+        Retrieves a :class:`Role` that the guild has.
+
+        .. note::
+
+            This method is an API call. For general usage, consider using :attr:`get_role` instead.
+        
+        .. versionadded:: 2.7
+
+        Returns
+        -------
+        :class:`Role`
+            The role in the guild with the specified ID.
+        
+        Raises
+        ------
+        HTTPException
+            Retrieving the role failed.
+        """
+        data = await self._state.http.get_role(self.id, role_id)
+        return Role(guild=self, state=self._state, data=data)
 
     async def _fetch_role(self, role_id: int) -> Role:
         """|coro|

discord/http.py

@@ -2048,6 +2048,16 @@ def delete_invite(
     def get_roles(self, guild_id: Snowflake) -> Response[list[role.Role]]:
         return self.request(Route("GET", "/guilds/{guild_id}/roles", guild_id=guild_id))
 
+    def get_role(self, guild_id: Snowflake, role_id: Snowflake) -> Response[role.Role]:
+        return self.request(
+            Route(
+                "GET",
+                "/guilds/{guild_id}/roles/{role_id}",
+                guild_id=guild_id,
+                role_id=role_id,
+            )
+        )
+
     def edit_role(
         self,
         guild_id: Snowflake,