Change the AST structure

[eredo]

The AST generated from the .d.ts file containing the closure types is not optimal. It's using an object map structure where properties are directly added into the object. Instead it should contain arrays for these properties.

Currently:

{
  qualifiedName: 'TestModule.TestClass',
  kind: NodeKind.CLASS
  staticMethod: {
    kind: NodeKind.FUNCTION,
    qualifiedName: 'TestModule.TestClass.staticMethod'
  },
  '#': {
    method: {
      kind: NodeKind.FUNCTION,
      qualifiedName: 'TestModule.TestClass.prototype.method'
    }
  }
}

Proposal:

{
  qualifiedName: 'TestModule.TestClass',
  kind: NodeKind.CLASS
  statics: [{
    name: 'staticMethod',
    kind: NodeKind.FUNCTION,
    qualifiedName: 'TestModule.TestClass.staticMethod'
  }],
  members: [{
    name: 'method',
    kind: NodeKind.FUNCTION,
    qualifiedName: 'TestModule.TestClass.prototype.method'
  }]
}