Support globs in tsconfig.json

[mhegazy]

Something along the lines of:

{
  "files" : [
    "folder1\\*.ts",
    "folder2\\**.ts"
  ]
}

open questions:

• Should it be in files or a separate property
• What is the expected --watch behavior
• Should we add excludes as well (e.g. includes: ".ts", excludes: ".d.ts");

[RichiCoder1]

Related/duplicate?: #1927

[mhegazy]

Thanks @RichiCoder1. closing.