Swift format updates (#39)

Updates to match latest swift-format configuration in swift-mmio.

Author: rauhul

.swift-format

@@ -23,9 +23,10 @@
   "respectsExistingLineBreaks" : true,
   "rules" : {
     "AllPublicDeclarationsHaveDocumentation" : false,
+    "AlwaysUseLiteralForEmptyCollectionInit" : true,
     "AlwaysUseLowerCamelCase" : true,
     "AmbiguousTrailingClosureOverload" : false,
-    "BeginDocumentationCommentWithOneLineSummary" : false,
+    "BeginDocumentationCommentWithOneLineSummary" : true,
     "DoNotUseSemicolons" : true,
     "DontRepeatTypeInStaticProperties" : true,
     "FileScopedDeclarationPrivacy" : true,
@@ -37,7 +38,7 @@
     "NeverUseImplicitlyUnwrappedOptionals" : true,
     "NoAccessLevelOnExtensionDeclaration" : true,
     "NoAssignmentInExpressions" : true,
-    "NoBlockComments" : false,
+    "NoBlockComments" : true,
     "NoCasesWithOnlyFallthrough" : true,
     "NoEmptyTrailingClosureParentheses" : true,
     "NoLabelsInCasePatterns" : true,
@@ -53,7 +54,8 @@
     "ReplaceForEachWithForLoop" : true,
     "ReturnVoidInsteadOfEmptyTuple" : true,
     "TypeNamesShouldBeCapitalized" : true,
-    "UseEarlyExits" : true,
+    "UseEarlyExits" : false,
+    "UseExplicitNilCheckInConditions" : true,
     "UseLetInEveryBoundCaseVariable" : true,
     "UseShorthandTypeNames" : true,
     "UseSingleLinePropertyGetter" : true,

smart-light/Matter/Matter.swift

@@ -86,19 +86,19 @@ extension Matter {
       case unknown(UInt32)
 
       init?(cluster: Cluster, attribute: UInt32) {
-        if let _ = cluster.as(OnOff.self) {
+        if cluster.as(OnOff.self) != nil {
           switch attribute {
           case OnOff.AttributeID<OnOff.OnOffState>.state.rawValue: self = .onOff
           default: return nil
           }
-        } else if let _ = cluster.as(LevelControl.self) {
+        } else if cluster.as(LevelControl.self) != nil {
           switch attribute {
           case LevelControl.AttributeID<LevelControl.CurrentLevel>.currentLevel
             .rawValue:
             self = .levelControl
           default: return nil
           }
-        } else if let _ = cluster.as(ColorControl.self) {
+        } else if cluster.as(ColorControl.self) != nil {
           switch attribute {
           case ColorControl.AttributeID<ColorControl.CurrentHue>.currentHue
             .rawValue: