docs: gRPC tutorial

[aarnphm]

What does this PR address?

This PR updates default tutorial with how to run BentoML with gRPC.

Additionally, this PR update installation guides on how people can install and use BentoML.

I ran across some links and fix that as well.

I also migrate setup.cfg to pyproject.toml

We introduce an bentoml[extras] that will install bentoml with all of the features (pydantic, s3 support, image io, pandas) at #3025

Before submitting:

• [ ] Does the Pull Request follow Conventional Commits specification naming? Here are GitHub's guide on how to create a pull request.
• [ ] Does the code follow BentoML's code style, both make format and make lint script have passed (instructions)?
• [ ] Did you read through contribution guidelines and follow development guidelines?
• [ ] Did your changes require updates to the documentation? Have you updated those accordingly? Here are documentation guidelines and tips on writting docs.
• [ ] Did you write tests to cover your changes?

[codecov[bot]]

Codecov Report

Merging #3013 (a96a58a) into main (266b131) will decrease coverage by 1.13%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #3013      +/-   ##
==========================================
- Coverage   62.29%   61.16%   -1.14%     
==========================================
  Files         131      131              
  Lines       11321    11321              
  Branches     1873     1873              
==========================================
- Hits         7052     6924     -128     
- Misses       3842     3972     +130     
+ Partials      427      425       -2     

Impacted Files	Coverage Δ
bentoml/bentos.py	66.95% <ø> (ø)
bentoml/_internal/frameworks/torchscript.py	0.00% <0.00%> (-92.00%)	:arrow_down:
bentoml/_internal/frameworks/common/pytorch.py	0.00% <0.00%> (-69.48%)	:arrow_down:
bentoml/_internal/runner/strategy.py	76.27% <0.00%> (-10.17%)	:arrow_down:
bentoml/_internal/runner/runner_handle/local.py	76.00% <0.00%> (-4.00%)	:arrow_down:
bentoml/_internal/utils/lazy_loader.py	76.47% <0.00%> (-2.95%)	:arrow_down:
bentoml/_internal/models/model.py	83.44% <0.00%> (-1.99%)	:arrow_down:
bentoml/_internal/runner/runner.py	83.63% <0.00%> (-1.82%)	:arrow_down: