Add a new parameter `max_width` to MyPrettyTable #1798

Job	Run time
tests (ubuntu-latest, unit, 3.8)	46s
tests (ubuntu-latest, unit, 3.12)	50s
tests (ubuntu-latest, integration, 3.8)	3m 1s
tests (ubuntu-latest, integration, 3.12)	3m 36s
tests (ubuntu-latest, tool, 3.8)	55s
tests (ubuntu-latest, tool, 3.12)	53s
tests (windows-2022, unit, 3.8)	2m 17s
tests (windows-2022, unit, 3.12)	2m 20s
tests (windows-2022, integration, 3.8)	3m 20s
tests (windows-2022, integration, 3.12)	2m 59s
tests (windows-2022, tool, 3.8)	2m 51s
tests (windows-2022, tool, 3.12)	2m 49s
coverage	9s
	26m 46s

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