text-art: remove explicit #include of C++ standard library headers

text-art: remove explicit #include of C++ standard library headers

gcc/analyzer/ChangeLog:
	* access-diagram.cc: Add #define INCLUDE_VECTOR.
	* bounds-checking.cc: Likewise.

gcc/ChangeLog:
	* diagnostic-format-sarif.cc: Add #define INCLUDE_VECTOR.
	* diagnostic.cc: Likewise.
	* text-art/box-drawing.cc: Likewise.
	* text-art/canvas.cc: Likewise.
	* text-art/ruler.cc: Likewise.
	* text-art/selftests.cc: Likewise.
	* text-art/selftests.h (text_art::canvas): New forward decl.
	* text-art/style.cc: Add #define INCLUDE_VECTOR.
	* text-art/styled-string.cc: Likewise.
	* text-art/table.cc: Likewise.
	* text-art/table.h: Remove #include <vector>.
	* text-art/theme.cc: Add #define INCLUDE_VECTOR.
	* text-art/types.h: Check that INCLUDE_VECTOR is defined.
	Remove #include of <vector> and <string>.
	* text-art/widget.cc: Add #define INCLUDE_VECTOR.
	* text-art/widget.h: Remove #include <vector>.

gcc/testsuite/ChangeLog:
	* gcc.dg/plugin/diagnostic_plugin_test_text_art.c: Add
	#define INCLUDE_VECTOR.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>