[Deployment] Setup fly.io deployment method and update docs (#1028)

Co-authored-by: sidmohanty11 <sidmohanty11@gmail.com>

embedchain/deployment/render.com/app.py

@@ -0,0 +1,58 @@
+import logging
+import os
+
+from flask import Flask, jsonify, request
+
+from embedchain import Pipeline as App
+
+app = Flask(__name__)
+
+os.environ["OPENAI_API_KEY"] = "sk-xxx"
+
+
+@app.route("/add", methods=["POST"])
+def add():
+    data = request.get_json()
+    data_type = data.get("data_type")
+    url_or_text = data.get("url_or_text")
+    if data_type and url_or_text:
+        try:
+            App().add(url_or_text, data_type=data_type)
+            return jsonify({"data": f"Added {data_type}: {url_or_text}"}), 200
+        except Exception:
+            logging.exception(f"Failed to add {data_type=}: {url_or_text=}")
+            return jsonify({"error": f"Failed to add {data_type}: {url_or_text}"}), 500
+    return jsonify({"error": "Invalid request. Please provide 'data_type' and 'url_or_text' in JSON format."}), 400
+
+
+@app.route("/query", methods=["POST"])
+def query():
+    data = request.get_json()
+    question = data.get("question")
+    if question:
+        try:
+            response = App().query(question)
+            return jsonify({"data": response}), 200
+        except Exception:
+            logging.exception(f"Failed to query {question=}")
+            return jsonify({"error": "An error occurred. Please try again!"}), 500
+    return jsonify({"error": "Invalid request. Please provide 'question' in JSON format."}), 400
+
+
+@app.route("/chat", methods=["POST"])
+def chat():
+    data = request.get_json()
+    question = data.get("question")
+    if question:
+        try:
+            response = App().chat(question)
+            return jsonify({"data": response}), 200
+        except Exception:
+            logging.exception(f"Failed to chat {question=}")
+            return jsonify({"error": "An error occurred. Please try again!"}), 500
+    return jsonify({"error": "Invalid request. Please provide 'question' in JSON format."}), 400
+
+
+@app.route("/api/python")
+def hello_world():
+    return "<p>Hello, World!</p>"

embedchain/deployment/render.com/requirements.txt

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+numpy==1.24.3
+Flask==2.2.2
+Werkzeug==2.2.2
+gunicorn
+embedchain