feat: Moves vendor branch views to their own files, starts to implement snapshot testing for html

Tests/ViewRouteTests/VendorBranchViewRouteTests.swift

@@ -31,6 +31,18 @@ struct VendorBranchViewRouteTests {
     #expect(route == .vendorBranch(.delete(id: id)))
   }
 
+  @Test
+  func index() throws {
+    let id = UUID(0)
+    var request = URLRequestData(
+      method: "GET",
+      path: "/vendors/branches",
+      query: ["vendorID": ["\(id)"]]
+    )
+    let route = try router.parse(&request)
+    #expect(route == .vendorBranch(.index(for: id)))
+  }
+
   @Test
   func select() throws {
     var request = URLRequestData(