feat: conda env for bentos in bentostore

[jjmachan]

Env Manager

The env manager allows you to run bentoml serve in an isolated environment. This PR adds support for creating conda environment

Usage

> bentoml serve --env conda <bento>

The created environment is created under $BENTOML_HOME/env if <bento> is loaded to bentostore. For project-level invocation the created environment is ephemeral.

To clean up the environment created, rm -rf $BENTOML_HOME/env

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]

Codecov Report

Merging #3396 (5d29c6d) into main (508d816) will decrease coverage by 0.26%.
The diff coverage is 7.01%.

@@            Coverage Diff             @@
##             main    #3396      +/-   ##
==========================================
- Coverage   31.93%   31.67%   -0.26%     
==========================================
  Files         135      138       +3     
  Lines       11150    11263     +113     
  Branches     1839     1856      +17     
==========================================
+ Hits         3561     3568       +7     
- Misses       7346     7452     +106     
  Partials      243      243              

Impacted Files	Coverage Δ
src/bentoml/_internal/env_manager/__init__.py	0.00% <0.00%> (ø)
src/bentoml/_internal/env_manager/envs.py	0.00% <0.00%> (ø)
src/bentoml/_internal/env_manager/manager.py	0.00% <0.00%> (ø)
src/bentoml/bentos.py	45.90% <0.00%> (-0.77%)	⬇️
src/bentoml/_internal/configuration/containers.py	48.43% <72.72%> (+1.01%)	⬆️

[aarnphm]

fwiw for all newer type we should use https://peps.python.org/pep-0604/ for consistency.

There are some typo here and there. I will dm you on slack for more.

[jjmachan]

After talking @aarnphm, other than these comments, need to make the following changes

• run_script should only write to find right before execution to minimize scope for script injection attacks
• Plan out the interface for conda, docker and other environments
• Add a caching mechanism to optimize disk usage and env init times. Only create new envs if the dependencies in bentofile.yaml changed Caching will not be implemented for now.

[aarnphm]

Hi @jjmachan, any updates on this PR?