Merge sim-rs-setup

Squashed commit of the following:

commit 1167852
Author: Simon Gellis <simongellis@gmail.com>
Date:   Mon Oct 7 17:40:53 2024 -0400

    Pass the seed in through configuration

commit 2ca6e95
Author: Simon Gellis <simongellis@gmail.com>
Date:   Mon Oct 7 17:24:37 2024 -0400

    Add README and fix some IO quirks

commit 3c38236
Author: Simon Gellis <simongellis@gmail.com>
Date:   Mon Oct 7 16:53:36 2024 -0400

    Update tx modeling parameters

commit e4e7525
Author: Simon Gellis <simongellis@gmail.com>
Date:   Mon Oct 7 16:09:35 2024 -0400

    Block propagation

commit 6cc2c5d
Author: Simon Gellis <simongellis@gmail.com>
Date:   Fri Oct 4 16:40:10 2024 -0400

    Simulate basic transactions

commit 0ed84c6
Author: Simon Gellis <simongellis@gmail.com>
Date:   Thu Oct 3 18:02:50 2024 -0400

    Emit block generation events to a file

commit b957f13
Author: Simon Gellis <simongellis@gmail.com>
Date:   Thu Oct 3 17:08:20 2024 -0400

    Fix VRF computation to match actual probability

commit 17ef4e4
Author: Simon Gellis <simongellis@gmail.com>
Date:   Thu Oct 3 10:38:40 2024 -0400

    Simulate simple slot lottery

sim-rs/.gitignore

@@ -0,0 +1,2 @@
+/target/
+/output