Add isConversation (#38)

Author: yakov116

index.ts

@@ -106,6 +106,9 @@ collect.set('isIssue', [
 export const isConversationList = (url: URL | Location = location): boolean => isGlobalConversationList(url) || isRepoConversationList(url);
 collect.set('isConversationList', combinedTestOnly);
 
+export const isConversation = (url: URL | Location = location): boolean => isIssue(url) || isPRConversation(url);
+collect.set('isConversation', combinedTestOnly);
+
 export const isLabelList = (url: URL | Location = location): boolean => getRepoPath(url) === 'labels';
 collect.set('isLabelList', [
 	'https://github.com/sindresorhus/refined-github/labels',