SNOW-1905965: Add wildcard support in file ls

[sfc-gh-pkowalewski]

Added a feature that will make the following file ls patterns possible:

• '*' matches any sequence of non-Separator characters
• '?' matches any single non-Separator character
• '[aml]' matches any single character within the brackets
• '[a-f]' matches any single character within the range specified in the brackets

Example: file ls "/var/logs/?[1-3]*.log" will match and output

• /var/logs/a1.log
• /var/logs/b3.log
• /var/logs/z1lalala.log

Tested on remote VM that the old and new functionality behaves as expected
Commands tested:

sanssh --target $TARGET --proxy $PROXY file ls "/var/log/[k-y]*"
sanssh --target $TARGET --proxy $PROXY file ls "/var/log/[ky]*"
sanssh --target $TARGET --proxy $PROXY file ls "/var/log/???log"
sanssh --target $TARGET --proxy $PROXY file ls "/var/log"

[sfc-gh-mwojtczak]

LGTM, thanks for making this change.

Before merging, could you please test on a test server to ensure the functionality is working end2end as expected and add a short description of what was tested to the PR?
Thanks

[sfc-gh-mwojtczak]

Maybe worth adding that this feature is supported in the client command description?

sansshell/services/localfile/client/client.go

Lines 916 to 922 in 8d582be

	func (*lsCmd) Usage() string {
	return `ls [--long] [--directory] <path>:
	List the path given printing out each entry (N if it's a directory). Use --long to get ls -l style output.
	If the entry is a directory it will be suppressed from the output unless --directory is set (ls -d style).
	NOTE: Only expands one level of a directory.
	`
	}