Plugin metrics (#7626)

* feat: add enable/disable checkbox for plugin usage

* feat: submit plugin data to packages.nodebb.org

only submit in production mode
submit once every 24 hours
dont submit for plugins that have "private": true in plugin.json
enabled on new installs
disabled on existing installs

* fix: hash not working after first send

fix statusCode

* fix: remove url

* feat: show compatibilty

* feat: add install question for submit plugin usage

src/install.js

@@ -28,6 +28,11 @@ questions.main = [
 		description: 'Please enter a NodeBB secret',
 		default: nconf.get('secret') || utils.generateUUID(),
 	},
+	{
+		name: 'submitPluginUsage',
+		description: 'Would you like to submit anonymous plugin usage to nbbpm?',
+		default: 'yes',
+	},
 	{
 		name: 'database',
 		description: 'Which database to use',
@@ -198,6 +203,14 @@ function completeConfigSetup(config, next) {
 			// ref: https://github.com/indexzero/nconf/issues/300
 			delete config.type;
 
+			var meta = require('./meta');
+			meta.configs.set('submitPluginUsage', config.submitPluginUsage === 'yes' ? 1 : 0, function (err) {
+				next(err, config);
+			});
+		},
+		function (config, next) {
+			delete config.submitPluginUsage;
+
 			install.save(config, next);
 		},
 	], next);