feat(file-md5): add plugin (#4201)

* added cordova-plugin-file-md5

* Update index.ts

Co-authored-by: Daniel Sogl <daniel@sogls.de>

src/@awesome-cordova-plugins/plugins/file-md5/index.ts

@@ -0,0 +1,43 @@
+import { Injectable } from '@angular/core';
+import { Plugin, Cordova, AwesomeCordovaNativePlugin } from '@awesome-cordova-plugins/core';
+
+/**
+ * @name File MD5
+ * @description
+ * This plugin reads large files in chunks and build the md5sum incrementally.
+ * @usage
+ * ```typescript
+ * import { FileMD5 } from '@awesome-cordova-plugins/file-md5/nx';
+ *
+ *
+ * constructor(private fileMD5: FileMD5) { }
+ *
+ * ...
+ *
+ *
+ * this.fileMD5.file(fileEntry)
+ *   .then((md5sum: string) => console.log(md5sum))
+ *   .catch((error: any) => console.error(error));
+ *
+ * ```
+ */
+@Plugin({
+  pluginName: 'FileMD5',
+  plugin: 'cordova-plugin-file-md5',
+  pluginRef: 'md5chksum',
+  repo: 'https://github.com/mramonlopez/cordova-plugin-file-md5',
+  platforms: ['Android', 'iOS'],
+})
+@Injectable()
+export class FileMD5 extends AwesomeCordovaNativePlugin {
+  /**
+   * Get MD5 checksum from a file
+   *
+   * @param fileEntry {FileEntry} File entry is a org.apache.cordova.file.FileEntry
+   * @returns {Promise<any>} Promise with md5sum
+   */
+  @Cordova()
+  file(fileEntry: any): Promise<any> {
+    return;
+  }
+}