Allow enabling replication manually

[aecsocket]

Fixes https://github.com/projectharmonia/bevy_replicon/issues/310.

I've tested this with the bevy_replicon_renet test app, and made appropriate changes to preludes and imports so that the renet transport code doesn't have to be modified at all to work properly.

A ton of the diffs are just connected_client(s) -> replicated_client(s).

I wrote a test for this as well, but I don't know if the module I put it in is correct.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 91.66667% with 8 lines in your changes missing coverage. Please review.

Project coverage is 90.60%. Comparing base (c0cc6b7) to head (1b066bf). Report is 3 commits behind head on master.

Files	Patch %	Lines
src/core/event_registry/server_event.rs	90.38%	5 Missing :warning:
src/core/replicated_clients.rs	77.77%	2 Missing :warning:
src/core/connected_clients.rs	87.50%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #316      +/-   ##
==========================================
- Coverage   90.82%   90.60%   -0.22%     
==========================================
  Files          36       37       +1     
  Lines        2235     2300      +65     
==========================================
+ Hits         2030     2084      +54     
- Misses        205      216      +11     

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[Shatur]

I separated the rename from this PR into #319. Let's merge it first, will make the review process much easier.

[Shatur]

Good catch!