Add option to disable redundant_discardable_let in SwiftUI view bodies

[SimplyDanny]

Resolves #3855.

[SwiftLintBot]

	17 Messages
📖	Linting Aerial with this PR took 0.94s vs 0.94s on main (0% slower)
📖	Linting Alamofire with this PR took 1.27s vs 1.28s on main (0% faster)
📖	Linting Brave with this PR took 6.65s vs 6.65s on main (0% slower)
📖	Linting DuckDuckGo with this PR took 5.52s vs 5.53s on main (0% faster)
📖	Linting Firefox with this PR took 11.1s vs 11.16s on main (0% faster)
📖	Linting Kickstarter with this PR took 10.37s vs 10.4s on main (0% faster)
📖	Linting Moya with this PR took 0.54s vs 0.53s on main (1% slower)
📖	Linting NetNewsWire with this PR took 2.95s vs 2.98s on main (1% faster)
📖	Linting Nimble with this PR took 0.82s vs 0.8s on main (2% slower)
📖	Linting PocketCasts with this PR took 8.86s vs 8.82s on main (0% slower)
📖	Linting Quick with this PR took 0.45s vs 0.45s on main (0% slower)
📖	Linting Realm with this PR took 4.57s vs 4.53s on main (0% slower)
📖	Linting Sourcery with this PR took 2.34s vs 2.35s on main (0% faster)
📖	Linting Swift with this PR took 4.56s vs 4.56s on main (0% slower)
📖	Linting VLC with this PR took 1.24s vs 1.24s on main (0% slower)
📖	Linting Wire with this PR took 18.5s vs 18.55s on main (0% faster)
📖	Linting WordPress with this PR took 11.64s vs 11.61s on main (0% slower)

Generated by 🚫 Danger