[INTERNAL] Replace depcheck with knip (#779)

Due to the deprecation of depcheck we migrated to knip, which is in
active development and has more features. As a first step we only
activate the checking of unused dependencies.

The reason why we replaced the docdash jsdoc template path lookup in the
jsdoc script is that knip fails to detect that a dependency (jsdoc) is
used when a command inside of the package.json contains JavaScript code
(via sub-shell).

JIRA: CPOUI5FOUNDATION-1126

Author: werwolf2303

knip.config.js

@@ -0,0 +1,40 @@
+const config = {
+	/**
+	 * As we currently only need unused dependency checks, we disable all checks except for that
+	 */
+	rules: {
+		files: "off",
+		duplicates: "off",
+		classMembers: "off",
+		unlisted: "off",
+		binaries: "off",
+		unresolved: "off",
+		catalog: "off",
+		exports: "off",
+		types: "off",
+		enumMembers: "off",
+	},
+
+	ignoreDependencies: [
+		/**
+		 * Used via nyc ava --node-arguments="--experimental-loader=@istanbuljs/esm-loader-hook"
+		 * which is not detected by knip as a usage of this package
+		 */
+		"@istanbuljs/esm-loader-hook",
+
+		/**
+		 * Used as jsdoc template in package.json script, which is not detected
+		 */
+		"docdash",
+
+		/**
+		 * We ignore these dependencies here because these are dynamic imports
+		 * and knip is unable to detect that these are being used
+		 * (lib/middleware/MiddlewareManager.js)
+		 */
+		"compression",
+		"cors"
+	]
+};
+
+export default config;