Create version-2.34.md

docs/release-notes/version-2.34.md

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+# Topolograph
+
+## v2.34 (20.07.2023)
+
+## New features
+Multi LSDBs upload support https://github.com/Vadims06/topolograph/issues/37, https://github.com/Vadims06/topolograph/issues/39. Available via API.
+
+#### Multi LSDBs upload via API 
+If a network has multiple areas, it is needed to get LSDB output from multiple devices and save it into separate files. Example below uses two LSDB outputs saved in the `lsdb_samples` folder.
+![](https://github.com/Vadims06/topolograph/blob/2bdf44ea4701bd2d05531e9020c6bad38c945b4b/docs/release-notes/v2.34/multi_lsdb_upload_post_request.png)
+* [Cisco_ospf.txt](https://github.com/Vadims06/topolograph/blob/3939983fdd859180a5ced8b2528bc558b106177a/docs/release-notes/v2.34/Cisco_ospf.txt)
+* [Juniper_ospf.txt](https://github.com/Vadims06/topolograph/blob/3939983fdd859180a5ced8b2528bc558b106177a/docs/release-notes/v2.34/Juniper_ospf.txt)  
+Python sample code:  
+```
+import requests
+TOPOLOGRAPH_HOST="127.0.0.1"
+TOPOLOGRAPH_PORT=5000
+TOPOLOGRAPH_WEB_API_USERNAME_EMAIL="your login"
+TOPOLOGRAPH_WEB_API_PASSWORD="your password"
+from pprint import pprint as pp
+
+lsdbs_attr_ll = []
+lsdb_dir = os.path.join(os.getcwd(), 'lsdb_samples')
+for vendor_name, protocol_name in [('Cisco', 'ospf'), ('Juniper', 'ospf')]:
+  f_name = os.path.join(lsdb_dir, f"{vendor_name}_{protocol_name}.txt")
+  with open(f_name) as f:
+    lsdbs_attr_ll.append({'lsdb_output': f.read(), 'vendor_device': vendor_name, 'igp_protocol': protocol_name})
+r_post = requests.post(f'http://{TOPOLOGRAPH_HOST}:{TOPOLOGRAPH_PORT}/api/graphs', auth=(TOPOLOGRAPH_WEB_API_USERNAME_EMAIL, TOPOLOGRAPH_WEB_API_PASSWORD),  json=lsdbs_attr_ll, timeout=(5, 30))
+pp(r_post.json())
+```