Flatten lib namespace

Move all functions and classes currently available through lib/name and
libName to be under a single flat namespace in lib.  This make
reorganising the lib namespace much simpler as the location of symbols
can move without breaking the consumers of lib.

The multi-entrypoint design was already problematic for the web plugin
system which couldn't effectively use it due to how webpack's shared
module system is awkward to set up with multiple entrypoints per package.

plugins/subspace_storage/instance.js

@@ -1,17 +1,14 @@
 "use strict";
-const libPlugin = require("@clusterio/lib/plugin");
-const libLuaTools = require("@clusterio/lib/lua_tools");
+const lib = require("@clusterio/lib");
 
 const {
-	Item,
 	PlaceEvent,
 	RemoveRequest,
 	GetStorageRequest,
 	UpdateStorageEvent,
-	SetStorageSubscriptionRequest,
 } = require("./messages");
 
-class InstancePlugin extends libPlugin.BaseInstancePlugin {
+class InstancePlugin extends lib.BaseInstancePlugin {
 	unexpectedError(err) {
 		this.logger.error(`Unexpected error:\n${err.stack}`);
 	}
@@ -46,7 +43,7 @@ class InstancePlugin extends libPlugin.BaseInstancePlugin {
 
 		let items = await this.instance.sendTo("controller", new GetStorageRequest());
 		// TODO Diff with dump of invdata produce minimal command to sync
-		let itemsJson = libLuaTools.escapeString(JSON.stringify(items));
+		let itemsJson = lib.escapeString(JSON.stringify(items));
 		await this.sendRcon(`/sc __subspace_storage__ UpdateInvData("${itemsJson}", true)`, true);
 	}
 
@@ -93,7 +90,7 @@ class InstancePlugin extends libPlugin.BaseInstancePlugin {
 			this.logger.verbose(JSON.stringify(items));
 		}
 
-		let itemsJson = libLuaTools.escapeString(JSON.stringify(items));
+		let itemsJson = lib.escapeString(JSON.stringify(items));
 		await this.sendRcon(`/sc __subspace_storage__ Import("${itemsJson}")`, true);
 	}
 
@@ -107,7 +104,7 @@ class InstancePlugin extends libPlugin.BaseInstancePlugin {
 		// XXX this should be moved to instance/clusterio api
 		items.push(["signal-unixtime", Math.floor(Date.now()/1000)]);
 
-		let itemsJson = libLuaTools.escapeString(JSON.stringify(items));
+		let itemsJson = lib.escapeString(JSON.stringify(items));
 		let task = this.sendRcon(`/sc __subspace_storage__ UpdateInvData("${itemsJson}")`, true);
 		this.pendingTasks.add(task);
 		task.finally(() => { this.pendingTasks.delete(task); });