Add docs for 3.5.0

[lukasbestle]

🟨 = Added to the Kirby 3.5 section ✅ = Documented on the release/3.5.0 branch

✅	Issue/Feature	Related PR	Assignees	Documenting Commit
🟨	Blocks field	---	@bastianallgeier
🟨	Layouts field	---	@bastianallgeier
🟨	List field	---	@bastianallgeier
🟨	Writer field	---	@bastianallgeier
	New logs root	https://github.com/getkirby/kirby/pull/2875	@distantnative
	Help option for headline + info fields	https://github.com/getkirby/kirby/pull/2898	@distantnative
🟨	Improvements to date & time fields	https://github.com/getkirby/kirby/pull/2892	@distantnative
	Page create dialog: hide single template select	https://github.com/getkirby/kirby/pull/2899	@distantnative	See PR https://github.com/getkirby/getkirby.com/pull/1069
🟨	Reset password view	https://github.com/getkirby/kirby/pull/2916	@lukasbestle
	Locale option: Support for all locale formats (array/string)	https://github.com/getkirby/kirby/pull/2895	@lukasbestle
🟨	Themeable login form	https://github.com/getkirby/kirby/pull/2929	@lukasbestle
🟨	Passwordless login & 2FA	https://github.com/getkirby/kirby/pull/2923 https://github.com/getkirby/kirby/pull/2934 https://github.com/getkirby/kirby/pull/2939	@lukasbestle
	More detailed accept options for file blueprints	https://github.com/getkirby/kirby/pull/2973	@lukasbestle
	Add note about using $app->clone() to plugin docs	https://github.com/getkirby/kirby/pull/2894	@lukasbestle
	Impersonation as nobody	https://github.com/getkirby/kirby/pull/2882	@lukasbestle
	PHP support: 7.3-8.0 (dropped 7.2)	https://github.com/getkirby/kirby/pull/2957	@lukasbestle
	Check Panel docs for outdated screenshots	----	@bastianallgeier @distantnative
	New UI kit components	----	@bastianallgeier @distantnative

[bastianallgeier]

Awesome to have such a list!

[lukasbestle]

Moved to #1079.