v0.1.0

Initial 45ck-maintained baseline release.\n\nHighlights:\n- REST-only provider architecture with expanded first-class resource coverage\n- New resources: discord_widget_settings, discord_guild_template, discord_guild_template_sync\n- OSS hardening: security policy, governance/maintainers/support docs, issue/PR templates, CODEOWNERS\n- CI hardening and identity alignment to 45ck/discord\n\nMigration from Chaotic-Logic/discord:\nterraform state replace-provider registry.terraform.io/Chaotic-Logic/discord registry.terraform.io/45ck/discord