Base: Add ls man page documentation

Base/usr/share/man/man1/ls.md

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+## Name
+
+ls - list directory contents
+
+## Synopsis
+
+```**sh
+$ ls [options...] [path...]
+```
+
+## Description
+
+`ls` lists directory contents and attributes.
+
+If no *path* argument is provided the current working directory is used.
+
+## Options
+
+* `--help`: Display this message
+* `-a`, `--all`: Show dotfiles
+* `-A`: Do not list implied . and .. directories
+* `-l`, `--long`: Display long info
+* `-t`: Sort files by timestamp
+* `-r`, `--reverse`: Reverse sort order
+* `-G`: Use pretty colors
+* `-i`, `--inode`: Show inode ids
+* `-n`, `--numeric-uid-gid`: In long format, display numeric UID/GID
+* `-h`, `--human-readable`: Print human-readable sizes
+* `-K`, `--no-hyperlinks`: Disable hyperlinks
+
+## Arguments
+
+* path: Directory to list
+
+## Examples
+
+```sh
+# List contents of working directory
+$ ls
+# List contents of working directory including hidden dot files
+$ ls -la
+# List contents of /etc/ directory
+$ ls /etc
+# List contents of /etc/ directory including hidden dot files
+$ ls -la /etc
+```
+