Apply suggestions from code review

Author: MaxDesiatov

Sources/PackageCollections/API.swift

@@ -433,7 +433,6 @@ public protocol PackageIndexProtocol {
 }
 
 public extension PackageIndexProtocol {
-
     func getPackageMetadata(
         identity: PackageIdentity,
         location: String?

Sources/PackageCollections/PackageIndexAndCollections.swift

@@ -254,6 +254,7 @@ public struct PackageIndexAndCollections: Closable {
             )
         }
     }
+
     /// Returns metadata for the package identified by the given `PackageIdentity`, using package index (if configured)
     /// and collections data.
     ///

Sources/PackageCollections/Storage/PackageCollectionsSourcesStorage.swift

@@ -73,7 +73,6 @@ public protocol PackageCollectionsSourcesStorage {
 }
 
 public extension PackageCollectionsSourcesStorage {
-
     func list() async throws -> [PackageCollectionsModel.CollectionSource] {
         try await safe_async {
             self.list(callback: $0)

Sources/PackageCollections/Storage/SQLitePackageCollectionsStorage.swift

@@ -500,7 +500,6 @@ final class SQLitePackageCollectionsStorage: PackageCollectionsStorage, Closable
             }
         }
     }
-    
     func searchTargets(identifiers: [Model.CollectionIdentifier]? = nil,
                        query: String,
                        type: Model.TargetSearchType,
@@ -841,6 +840,7 @@ final class SQLitePackageCollectionsStorage: PackageCollectionsStorage, Closable
     internal func populateTargetTrie() async throws {
         try await safe_async { self.populateTargetTrie(callback: $0) }
     }
+
     internal func populateTargetTrie(callback: @escaping (Result<Void, Error>) -> Void = { _ in }) {
         // Check to see if there is any data before submitting task to queue because otherwise it's no-op anyway
         do {

Sources/SPMTestSupport/misc.swift

@@ -110,6 +110,7 @@ public func testWithTemporaryDirectory(
         throw error
     }
 }
+
 @discardableResult public func fixture<T>(
     name: String,
     createGitRepo: Bool = true,
@@ -162,7 +163,6 @@ fileprivate func verifyFixtureExists(at fixtureSubpath: RelativePath, file: Stat
 }
 
 fileprivate func setup(fixtureDir: AbsolutePath, in tmpDirPath: AbsolutePath, copyName: String, createGitRepo: Bool = true) throws -> AbsolutePath {
-
     func copy(from srcDir: AbsolutePath, to dstDir: AbsolutePath) throws {
 #if os(Windows)
         try localFileSystem.copy(from: srcDir, to: dstDir)