Add save listing and subscriptions

Add link messages for listing saves and listening for changes to the
list of saves for instances along with a table in the instance view page
showing the save list for the instance and a list-saves command to ctl.

test/integration/clusterio.js

@@ -146,6 +146,21 @@ describe("Integration of Clusterio", function() {
 			});
 		});
 
+		describe("saveListUpdateEventHandler()", function() {
+			it("should have triggered for the created save", function() {
+				slowTest(this);
+				assert.equal(getControl().saveListUpdates.slice(-1)[0].list[0].name, "world.zip");
+			});
+		});
+
+		describe("instance list-saves", function() {
+			it("lists the created save", async function() {
+				slowTest(this);
+				let result = await execCtl("instance list-saves test");
+				assert(/world\.zip/.test(result.stdout), "world.zip not present in list save output");
+			});
+		});
+
 		describe("instance export-data", function() {
 			it("exports the data", async function() {
 				slowTest(this);

test/integration/index.js

@@ -26,11 +26,15 @@ class TestControl extends libLink.Link {
 		super("control", "master", connector);
 		libLink.attachAllMessages(this);
 		this.instanceUpdates = [];
+		this.saveListUpdates = [];
 
 		this.connector.on("connect", () => {
 			libLink.messages.setInstanceSubscriptions.send(
 				this, { all: true, instance_ids: [] }
 			).catch(err => logger.error(`Error setting instance subscriptions:\n${err.stack}`));
+			libLink.messages.setSaveListSubscriptions.send(
+				this, { all: true, instance_ids: [] }
+			).catch(err => logger.error(`Error setting save list subscriptions:\n${err.stack}`));
 		});
 	}
 
@@ -45,6 +49,10 @@ class TestControl extends libLink.Link {
 		this.instanceUpdates.push(message.data);
 	}
 
+	async saveListUpdateEventHandler(message) {
+		this.saveListUpdates.push(message.data);
+	}
+
 	async logMessageEventHandler() { }
 }