Crowd-source achievements of Techspace

[silent-lad]

ask your seniors/peers for what achievement has techspace members made in previous years. if you know them add them. if you think you have achieved something to be added..ADD THAT TOO.
This will make it easier to make a hall of fame for techspace.

Add all the achievements in the achievements.md file in the root of the project. We just want the data as of now.