feat: Adds git client tests, restructures files.

Sources/ConfigurationClient/Configuration.swift

@@ -21,9 +21,11 @@ public struct Configuration: Codable, Equatable, Sendable {
     self.strategy = strategy
   }
 
-  public static var mock: Self {
+  public static var `default`: Self { .mock(module: "<my-tool>") }
+
+  public static func mock(module: String = "cli-version") -> Self {
     .init(
-      target: .init(module: .init("cli-version")),
+      target: .init(module: .init(module)),
       strategy: .semvar(.init())
     )
   }

Sources/ConfigurationClient/ConfigurationClient.swift

@@ -30,7 +30,7 @@ public struct ConfigurationClient: Sendable {
     guard let url = try? await find(url) else {
       throw ConfigurationClientError.configurationNotFound
     }
-    return (try? await load(url)) ?? .mock
+    return (try? await load(url)) ?? .default
   }
 }