BaseTools: Add more parameter checking for CopyFileOnChange()

BaseTools: Add more parameter checking for CopyFileOnChange()

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2193

The current CopyFileOnChange() method in Misc.py does not
accept the input SrcFile parameter as a dir, but the method
does not check the SrcFile is dir or not. This patch is to
add more input parameter type checking and error message output
for method CopyFileOnChange.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Bob Feng <bob.c.feng@intel.com>
Signed-off-by: Steven Shi <steven.shi@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>