[format] Change indentation to 4 spaces

To align better with the current formatting. No other reason.
Also add a few swift-ignore-format annotations for weights.

Bug: 430616180
Change-Id: I07b5dae4938578a49ec393faaf18959e2867e58f
Reviewed-on: https://chrome-internal-review.googlesource.com/c/v8/fuzzilli/+/9155817
Reviewed-by: Michael Achenbach <machenbach@google.com>
Commit-Queue: Matthias Liedtke <mliedtke@google.com>

Author: Liedtke

.swift-format

@@ -6,7 +6,7 @@
   "indentConditionalCompilationBlocks" : true,
   "indentSwitchCaseLabels" : false,
   "indentation" : {
-    "spaces" : 2
+    "spaces" : 4
   },
   "lineBreakAroundMultilineExpressionChainComponents" : false,
   "lineBreakBeforeControlFlowKeywords" : false,

Sources/Fuzzilli/CodeGen/CodeGeneratorWeights.swift

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 /// Default weights for the builtin code generators.
+// swift-format-ignore
 public let codeGeneratorWeights = [
     // Value generators. These are used to bootstrap code
     // generation and therefore control the types of variables

Sources/Fuzzilli/CodeGen/ProgramTemplateWeights.swift

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 /// Default weights for the builtin program templates.
+// swift-format-ignore
 public let programTemplateWeights = [
     "Codegen100":            2,
     "Codegen50":             2,