Dynamically import smol-toml package

[heejaechang]

module change in tsconfig.json in 6be5f8c#diff-ac3a7b49798141e77c54e96bca892a082469cc83bb335322b35c01e020b060c8R1142 is causing issues in pylance due to it supporting multiple environments such as webpack, ts-node, browser and etc.

this is another approach to use smol-toml. confirmed it works as expected with webpack, ts-node and etc.

[erictraut]

This change appears to break pyright. Refer to the mypy_primer output. All of the projects that use pyproject.toml are reporting errors now.

[heejaechang]

@erictraut can you take a look again?

[erictraut]

Looks OK, but it would be better if the "shared.ts" file had a more appropriate and descriptive name.

[github-actions]

According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅