feat: Begins breaking database out into it's own module, using dependencies

Sources/DatabaseClient/Vendors.swift

@@ -0,0 +1,55 @@
+import Dependencies
+import DependenciesMacros
+import SharedModels
+
+public extension DatabaseClient {
+  @DependencyClient
+  struct Vendors: Sendable {
+    public var create: @Sendable (Vendor.Create) async throws -> Vendor
+    public var delete: @Sendable (Vendor.ID) async throws -> Void
+    public var fetchAll: @Sendable (FetchRequest) async throws -> [Vendor]
+    public var get: @Sendable (Vendor.ID, GetRequest) async throws -> Vendor?
+    public var update: @Sendable (Vendor.ID, Vendor.Update) async throws -> Vendor
+
+    public enum FetchRequest {
+      case all
+      case withBranches
+    }
+
+    public enum GetRequest {
+      case all
+      case withBranches
+    }
+
+    public func fetchAll() async throws -> [Vendor] {
+      try await fetchAll(.all)
+    }
+
+    public func get(_ id: Vendor.ID) async throws -> Vendor? {
+      try await get(id, .all)
+    }
+  }
+}
+
+extension DatabaseClient.Vendors: TestDependencyKey {
+  public static let testValue: DatabaseClient.Vendors = Self()
+}
+
+public extension Vendor {
+
+  struct Create: Codable, Sendable {
+    public let name: String
+
+    public init(name: String) {
+      self.name = name
+    }
+  }
+
+  struct Update: Codable, Sendable {
+    public let name: String?
+
+    public init(name: String?) {
+      self.name = name
+    }
+  }
+}