Add initial project structure with backend and frontend setup

- Created backend structure with Go, including main application logic and API endpoints.
- Added Docker support for both development and production environments.
- Introduced frontend using Nuxt 3 with Tailwind CSS for styling.
- Included configuration files for Docker and environment variables.
- Established basic documentation for contributing, development, and deployment processes.
- Set up .gitignore and .dockerignore files to manage ignored files in the repository.

frontend-nuxt/lib/UniqueList.js

@@ -0,0 +1,39 @@
+/**
+ * Elements should have unique field "id"
+ */
+export class UniqueList {
+  constructor() {
+    this.elements = {}
+  }
+
+  update(dataList, addCallback, removeCallback, updateCallback) {
+    const elementsToAdd = dataList.filter((it) => this.elements[it.id] === undefined)
+    const elementsToRemove = Object.keys(this.elements)
+      .filter((it) => dataList.find((up) => String(up.id) === it) === undefined)
+      .map((id) => this.elements[id])
+    if (removeCallback) {
+      elementsToRemove.forEach((it) => removeCallback(it))
+    }
+    if (updateCallback) {
+      dataList.forEach((newElement) => {
+        const oldElement = this.elements[newElement.id]
+        if (oldElement) {
+          updateCallback(oldElement, newElement)
+        }
+      })
+    }
+    if (addCallback) {
+      elementsToAdd.forEach((it) => addCallback(it))
+    }
+    elementsToRemove.forEach((it) => delete this.elements[it.id])
+    elementsToAdd.forEach((it) => (this.elements[it.id] = it))
+  }
+
+  getElements() {
+    return Object.values(this.elements)
+  }
+
+  byId(id) {
+    return this.elements[id]
+  }
+}