reorg test structure to match tox and CI jobs, drop bumpversion for bump-my-version and move config to pyproject.toml, fix docs building

tests/core/network/conftest.py

@@ -0,0 +1,29 @@
+import pytest
+
+from libp2p.tools.factories import (
+    net_stream_pair_factory,
+    swarm_conn_pair_factory,
+    swarm_pair_factory,
+)
+
+
+@pytest.fixture
+async def net_stream_pair(security_protocol):
+    async with net_stream_pair_factory(
+        security_protocol=security_protocol
+    ) as net_stream_pair:
+        yield net_stream_pair
+
+
+@pytest.fixture
+async def swarm_pair(security_protocol):
+    async with swarm_pair_factory(security_protocol=security_protocol) as swarms:
+        yield swarms
+
+
+@pytest.fixture
+async def swarm_conn_pair(security_protocol):
+    async with swarm_conn_pair_factory(
+        security_protocol=security_protocol
+    ) as swarm_conn_pair:
+        yield swarm_conn_pair