added translations + finnish 1

cogs/hello.py

@@ -0,0 +1,13 @@
+import discord
+from discord.ext import commands
+
+class Hello(commands.Cog):
+    def __init__(self, bot):
+        self.bot = bot
+
+    @commands.command()
+    async def hello(self, ctx):
+        await ctx.send("Hello, world!")
+
+async def setup(bot):
+    await bot.add_cog(Hello(bot))