🌟 Data migration tool from nextcloud (#299)

- created server configuration
 - implemented downloading files from nextcloud to a local directory
 - build of the docker image added to the GutHub workflow
 - Twake client added
 - Creating user in Twake Drive from ldap
 - Ldap client with ldapsearch(TODO make it work with ldapjs)
 - Jest debug tests

tdrive/backend/utils/nextcloud-migration/src/twake_client.ts

@@ -0,0 +1,101 @@
+import axios, { AxiosError } from 'axios';
+import { User } from './ldap_user';
+
+type TwakeClientConfiguration = {
+  url: string,
+    credentials: {
+    appId: string,
+    secret: string,
+  }
+}
+
+
+export class TwakeDriveClient {
+
+  private config: TwakeClientConfiguration;
+
+  constructor(config: TwakeClientConfiguration) {
+    this.config = config;
+    //remove the trailing '/'
+    this.config.url = this.config.url.replace(/\/$/, '');
+  }
+
+  async createUser(user: User) {
+    const client = await this.client();
+    try {
+      const response = await client.post(this.config.url + "/api/sync",
+        {
+          first_name: user.firstName,
+          last_name: user.lastName,
+          email: user.email
+        });
+      return response.data;
+    } catch(e){
+      console.log(`Error for ${JSON.stringify(user)}: ${e.message}, body: ${e.response?.data?.message}`);
+      throw e;
+    };
+  }
+
+  private async client() {
+    return axios.create({
+      baseURL: this.config.url,
+      headers: {
+        Authorization: `Bearer ${await (this.accessToken())}`,
+      },
+    });
+  }
+
+  private async accessToken(): Promise<string> {
+    try {
+      const response = await axios.post<IApiServiceApplicationTokenRequestParams, { data: IApiServiceApplicationTokenResponse }>(
+        `${this.config.url}/api/console/v1/login`,
+        {
+          id: this.config.credentials.appId,
+          secret: this.config.credentials.secret,
+        },
+        {
+          headers: {
+            Authorization: `Basic ${Buffer.from(`${this.config.credentials.appId}:${this.config.credentials.secret}`).toString('base64')}`,
+          },
+        },
+      );
+
+      const {
+        resource: {
+          access_token: { value },
+        },
+      } = response.data;
+
+      return value;
+    } catch (error) {
+      console.error('failed to get application token', error);
+      console.info('Using token ', this.config.credentials.appId, this.config.credentials.secret);
+      console.info(`POST ${this.config.url}/api/console/v1/login`);
+      console.info(`Basic ${Buffer.from(`${this.config.credentials.appId}:${this.config.credentials.secret}`).toString('base64')}`);
+      throw new Error("Unable to get access to token, see precious errors for details.");
+    }
+  };
+
+}
+
+type TwakeDriveUser = {
+  first_name: string;
+  last_name: string;
+  email: string;
+}
+
+interface IApiServiceApplicationTokenRequestParams {
+  id: string;
+  secret: string;
+}
+
+interface IApiServiceApplicationTokenResponse {
+  resource: {
+    access_token: {
+      time: number;
+      expiration: number;
+      value: string;
+      type: string;
+    };
+  };
+}