[CHAT-2445] Add hardDelete option to truncate channel

[driver-devel]

CLA

• I have signed the Stream CLA (required).
• Code changes are tested

Description of the changes, What, Why and How?

Changelog

• Support hard delete items when truncating a channel

[github-actions]

Size Change: +184 B (0%)

Total Size: 263 kB

Filename	Size	Change
dist/browser.es.js	57.7 kB	+47 B (0%)
dist/browser.full-bundle.min.js	31.1 kB	-1 B
dist/browser.js	58.3 kB	+47 B (0%)
dist/index.es.js	57.7 kB	+46 B (0%)
dist/index.js	58.4 kB	+45 B (0%)

_{compressed-size-action}

[ferhatelmas]

LGTM