Add CommentList to StringFileData (#16568)

* Add CommentList to StringFileData

* added more types

* use toRaw

* using Map rather than array for comments

* using Range class

* Comment with ranges:Range[]

* Revert "Comment with ranges:Range[]"

This reverts commit 0783b1837562600637db03cc70c620129061c797.

* Comment with ranges:Range[]

* remove isDeleted

* commentList.toRaw()

* using toRaw

* commentId to id

* Revert "using toRaw"

This reverts commit 0c04ca5836f3befd5ec027bad5bf722e8b27f36c.

* fix merge

* make comment map internal to CommentList

* remove unused type

* fix parameter name in StringFileData

* import types more consistently

* more consistent type def

GitOrigin-RevId: 2be2225819d8e8ebcf90d08def280377205cb9ec

libraries/overleaf-editor-core/test/file.test.js

@@ -88,4 +88,9 @@ describe('File', function () {
       expect(clone.getStringLength()).to.equal(0)
     })
   })
+
+  it('getComments() returns an empty comment list', function () {
+    const file = File.fromString('foo')
+    expect(file.getComments()).to.eql([])
+  })
 })