install: add libp2p and zeroconf dependencies for the new serverless extra:

`libp2p` will used for implementing serverless features, `zeroconf` for LAN discovery.
Lock file has been updated.

Note: `libp2p` is currently not compatible with Python 3.14 (cf.
https://github.com/libp2p/py-libp2p/issues/1100 )

rel 479

pyproject.toml

@@ -109,6 +109,11 @@ ox = [
     "python-gnupg>=0.5.6",
 ]
 
+serverless = [
+    "libp2p",
+    "zeroconf",
+]
+
 # Main features for a good experience
 main = [
     "libervia-backend[tor]",
@@ -134,7 +139,8 @@ all = [
     "libervia-backend[tor]",
     # Used in isolated environment (on system packages, official GPGME Python binding
     # should be used).
-    "libervia-backend[ox]"
+    "libervia-backend[ox]",
+    "libervia-backend[serverless]"
 ]
 
 [dependency-groups]