Move top-level typedefs to typedefs.js

With one exception, those directly in the `ol` namespace can be moved without problem.
Some left-over goog.requires are also removed.

src/ol/coordinate.js

@@ -1,29 +1,9 @@
-goog.provide('ol.Coordinate');
-goog.provide('ol.CoordinateFormatType');
 goog.provide('ol.coordinate');
 
 goog.require('ol.math');
 goog.require('ol.string');
 
 
-/**
- * A function that takes a {@link ol.Coordinate} and transforms it into a
- * `{string}`.
- *
- * @typedef {function((ol.Coordinate|undefined)): string}
- * @api stable
- */
-ol.CoordinateFormatType;
-
-
-/**
- * An array of numbers representing an xy coordinate. Example: `[16, 48]`.
- * @typedef {Array.<number>} ol.Coordinate
- * @api stable
- */
-ol.Coordinate;
-
-
 /**
  * Add `delta` to `coordinate`. `coordinate` is modified in place and returned
  * by the function.