📦 refactor: Move DB Models to @librechat/data-schemas (#6210)

* 🚀 feat: Introduce data schemas and refactor models to use @librechat/data-schemas

* 🚀 feat: Add installation step for Data Schemas Package in backend review workflow

* chore: Add `data-schemas` package to update/rebuild packages scripts

* chore: Update Dockerfile to include data-schemas package build process

* fix: add missing @rollup/plugin-typescript package

* chore: Add GitHub Actions workflow for publishing data-schemas package

---------

Co-authored-by: Danny Avila <danny@librechat.ai>

api/models/schema/assistant.js

@@ -1,41 +0,0 @@
-const mongoose = require('mongoose');
-
-const assistantSchema = mongoose.Schema(
-  {
-    user: {
-      type: mongoose.Schema.Types.ObjectId,
-      ref: 'User',
-      required: true,
-    },
-    assistant_id: {
-      type: String,
-      index: true,
-      required: true,
-    },
-    avatar: {
-      type: {
-        filepath: String,
-        source: String,
-      },
-      default: undefined,
-    },
-    conversation_starters: {
-      type: [String],
-      default: [],
-    },
-    access_level: {
-      type: Number,
-    },
-    file_ids: { type: [String], default: undefined },
-    actions: { type: [String], default: undefined },
-    append_current_datetime: {
-      type: Boolean,
-      default: false,
-    },
-  },
-  {
-    timestamps: true,
-  },
-);
-
-module.exports = assistantSchema;