sdk: Make wildcard support for listing USS files optional

[t1m0thyj]

Is your feature or enhancement request related to a problem or limitation? Please describe

For the Zowe Explorer FTP extension, we would like the ability to disable wildcard filtering, since the Zowe Explorer tree doesn't support it.

Describe your enhancement idea

Make the client-side wildcard filtering for UssUtils.listFiles method optional so that extenders like ZE can opt out:

zowe-cli-ftp-plugin/src/api/UssUtils.ts

Lines 35 to 51 in d902d8f

	// Only support wildcard matching in file names as follows.
	// "/dir1/dir2"
	// "/dir1/dir2/file*" => /^file.*$/
	// "/dir1/dir2/*suffix" => /^.*suffix$/
	// "/dir1/dir2/file*suffix" => /^file.*suffix$/
	let directoryToList = directory;
	const slashPosN = directory.lastIndexOf("/");
	let filter: (fileName: string) => boolean;
	if (slashPosN !== -1) {
	const lastPart = directory.substring(slashPosN + 1);
	if (lastPart.indexOf("*") !== -1) {
	directoryToList = directory.substring(0, slashPosN);
	const pattern = "^" + lastPart.replace(/\*/g, ".*") + "$";
	filter = (fileName: string) => (fileName.match(pattern) != null);
	this.log.debug("Listing USS files in the directory '%s' with pattern '%s'", directoryToList, pattern);
	}
	}

Describe alternatives you've considered

Provide any additional context

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