DOC: Add ns documentation for possible sleeve tasks (#217)

* Add specific types for sleeve tasks
* Moved LocationName enum to overall enums file
* Add LocationName enum to those provided to player
* remove trailing s on CompanyPosNames enum (now CompanyPosName, in line with LocationName)
* Also regenerated all ns documentation. This leads to an expected error when checking for generated files, because PRs should not normally touch markdown files. Also leads to a lint failure in generated file bitburner.d.ts
* also removed some exporting from NetscriptDefinitions.d.ts for anything that wasn't imported somewhere else.

markdown/bitburner.netscriptport.read.md

@@ -9,11 +9,11 @@ Shift an element out of the port.
 <b>Signature:</b>
 
 ```typescript
-read(): string | number;
+read(): PortData;
 ```
 <b>Returns:</b>
 
-string \| number
+[PortData](./bitburner.portdata.md)
 
 the data read.