feat: Introduce Playwright for UI testing

Instead of using Robot Framework which does not run during a `mvn install`. Playwright seems to be the better approach. We can now write them as normal JUnit test and they are executed during a build.

Additionally this PR solves some interesting bugs found during writing Playwright tests:

- A reset of a lesson removes all assignments as a result another user wouldn't see any assignments
- If someone solves an assignment the assignment automatically got solved for a new user since the assignment included the `solved` flag which immediately got copied to new lesson progress.
- Introduction of assignment progress linking a assignment not directly to all users.

src/it/java/org/owasp/webgoat/integration/SqlInjectionLessonIntegrationTest.java

@@ -0,0 +1,78 @@
+package org.owasp.webgoat.integration;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Test;
+
+public class SqlInjectionLessonIntegrationTest extends IntegrationTest {
+
+  public static final String sql_2 = "select department from employees where last_name='Franco'";
+  public static final String sql_3 =
+      "update employees set department='Sales' where last_name='Barnett'";
+  public static final String sql_4_drop = "alter table employees drop column phone";
+  public static final String sql_4_add = "alter table employees add column phone varchar(20)";
+  public static final String sql_5 = "grant select on grant_rights to unauthorized_user";
+  public static final String sql_9_account = " ' ";
+  public static final String sql_9_operator = "or";
+  public static final String sql_9_injection = "'1'='1";
+  public static final String sql_10_login_count = "2";
+  public static final String sql_10_userid = "1 or 1=1";
+
+  public static final String sql_11_a = "Smith' or '1' = '1";
+  public static final String sql_11_b = "3SL99A'  or '1'='1";
+
+  public static final String sql_12_a = "Smith";
+  public static final String sql_12_b =
+      "3SL99A' ; update employees set salary= '100000' where last_name='Smith";
+
+  public static final String sql_13 = "%update% '; drop table access_log ; --'";
+
+  @Test
+  public void runTests() {
+    startLesson("SqlInjection");
+
+    Map<String, Object> params = new HashMap<>();
+    params.clear();
+    params.put("query", sql_2);
+    checkAssignment(url("SqlInjection/attack2"), params, true);
+
+    params.clear();
+    params.put("query", sql_3);
+    checkAssignment(url("SqlInjection/attack3"), params, true);
+
+    params.clear();
+    params.put("query", sql_4_add);
+    checkAssignment(url("SqlInjection/attack4"), params, true);
+
+    params.clear();
+    params.put("query", sql_5);
+    checkAssignment(url("SqlInjection/attack5"), params, true);
+
+    params.clear();
+    params.put("operator", sql_9_operator);
+    params.put("account", sql_9_account);
+    params.put("injection", sql_9_injection);
+    checkAssignment(url("SqlInjection/assignment5a"), params, true);
+
+    params.clear();
+    params.put("login_count", sql_10_login_count);
+    params.put("userid", sql_10_userid);
+    checkAssignment(url("SqlInjection/assignment5b"), params, true);
+
+    params.clear();
+    params.put("name", sql_11_a);
+    params.put("auth_tan", sql_11_b);
+    checkAssignment(url("SqlInjection/attack8"), params, true);
+
+    params.clear();
+    params.put("name", sql_12_a);
+    params.put("auth_tan", sql_12_b);
+    checkAssignment(url("SqlInjection/attack9"), params, true);
+
+    params.clear();
+    params.put("action_string", sql_13);
+    checkAssignment(url("SqlInjection/attack10"), params, true);
+
+    checkResults("SqlInjection");
+  }
+}