Rust publishing updates

[AyodeAwe]

This PR adds automation for publishing the cuvs and cuvs-sys rust crates.

I updated the rust usage README to include simple steps to import the cuvs module in any consuming rust project. I've added conda environment files that would facilitate the installation steps described in the README.

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Testing the changes in this PR included the following steps:

• I first replicated local builds of the cuvs rust module.
• Then I attempted a build of the rust example in the examples directory which imports the current cuvs library as is, and successfully ran the rust example project.
• I updated the rust bindings to use different package names and published both as:
  • jawe-cuvs-iii (cuvs)
  • jave-cuvs-sys-iii (cuvs-sys)
• I published by running the publish-rust.yaml workflow. First run can be found here, and a second run here.
• After publishing, I locally compiled the example rust module by importing the published modules (jawe-cuvs-iii & jawe-cuvs-sys-iii) and was able to successfully run the example rust project
• I also tested the build & imports on both ARM and AMD architectures.

Cargo run output

# cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
     Running `target/debug/cuvs-rust-example`
using ivf_pq::index_params nrows 65536, dim 512, n_lists 256, pq_dim 128
[ 18669][17:16:49:911962][info  ] optimizing graph
[ 18669][17:16:50:057608][info  ] Graph optimized, creating index
Indexed 65536x512 datapoints into cagra index
Neighbors [[0, 6880, 12927, 59705, 45003, 33779, 39003, 56796, 6491, 34338],
 [1, 28206, 47512, 44788, 14031, 49376, 43330, 3429, 41428, 49044],
 [2, 45154, 4777, 62753, 45378, 13104, 4082, 46221, 65234, 45638],
 [3, 41243, 59296, 4950, 55157, 32839, 42927, 10811, 37504, 57827]], shape=[4, 10], strides=[10, 1], layout=Cc (0x5), const ndim=2
Distances [[0.0, 68.72183, 69.83197, 70.23868, 71.08637, 71.15034, 71.60148, 71.71672, 71.82242, 71.90005],
 [0.0, 68.85643, 69.43584, 69.72554, 69.883835, 70.03081, 70.05081, 70.1477, 70.169556, 70.26346],
 [0.0, 69.09878, 69.42933, 70.06172, 70.10106, 70.16475, 70.19414, 70.64023, 70.64905, 70.71358],
 [0.0, 64.99479, 65.39395, 66.827286, 66.99862, 67.110855, 67.57162, 67.779526, 67.964035, 68.002716]], shape=[4, 10], strides=[10, 1], layout=Cc (0x5), const ndim=2

[benfred]

This looks great! Thanks for taking this on @AyodeAwe !

I have one minor question: