Toolshed (#17895)

* ogh

* i should save my work

* ogh

* hhcdfhjbghshbxdfhghshc
- lots of bugs in parsing still
- invocation is a stub

* expr parsing works

* awawa

* Saving work

* Improve APIs a bit all around, add shortcuts.

* awa

* awa

* AAAAAA

* save work

* Move shit to engine

* lord

* bql is kill

* forgot the fucking bike rack

* bql is kill for real

* pjb will kill me

* aughfhbdj

* adgddf

* gdsgvfvxshngfgh

* b

* hfsjhghj

* a

* tf you mean i have to document it

* follow C# standards

* Assorted cleanup and documentation pass, minor bugfix in ValueRefParser.

* Start porting old commands, remove that pesky prefix in favor of integrating with the shell.

* bw

* Fix valueref up a bit, improve autocomplete for it.

* awa

* fix tests

* git shut up

* Arithmetic commands.

* parse improvements

* Update engine.

---------

Co-authored-by: moonheart08 <moonheart08@users.noreply.github.com>

Content.Shared/Administration/AnyCommandAttribute.cs

@@ -1,5 +1,6 @@
 using JetBrains.Annotations;
 using Robust.Shared.Console;
+using Robust.Shared.Toolshed;
 
 namespace Content.Shared.Administration
 {
@@ -7,7 +8,6 @@ namespace Content.Shared.Administration
     ///     Specifies that a command can be executed by any player.
     /// </summary>
     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
-    [BaseTypeRequired(typeof(IConsoleCommand))]
     [MeansImplicitUse]
     public sealed class AnyCommandAttribute : Attribute
     {