Language server

[svenefftinge]

A language server registrant, that scans the /projects directory for files with the pattern

<fileextension>-languageserver.jar

If it finds one it starts a process (using java -jar) and connects to stdin, stdout.

To try run in that directory
wget https://dl.dropboxusercontent.com/u/842506/testlang-languageserver.jar

after that open a file with *.testlang extension.

The language declares types, like this:

type Person {
  string name
  Address address
}

type Address {
  string street
  string city
}

[codenvy-ci]

Can one of the admins verify this patch?