Support ESM and .mts/.cts extensions with jiti loader

[beerose]

Description

A second approach to adding ESM support. The previous one included using tsc and custom caching and this caching bit had a bunch of edge cases that I wasn't aware of in the beginning.

I replaced it with jiti loader and added more test cases. jiti is much faster than running tsc (similar time to cosmic loader).

Related to issues in graphql-code-generator: dotansimha/graphql-code-generator#8509 and dotansimha/graphql-code-generator#8862. More context in this PR: dotansimha/graphql-code-generator#9086.

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Extended existing tests.

Test Environment:

• OS:
• GraphQL Config Version:
• NodeJS:

Checklist:

• I have followed the CONTRIBUTING doc and the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests and linter rules pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[github-actions]

🚀 Snapshot Release (alpha)

The latest changes of this PR are available as alpha on npm (based on the declared changesets):

Package	Version	Info
graphql-config	4.5.0-alpha-20230306151301-d7b29ec	npm ↗︎ unpkg ↗︎

[github-actions]

💻 Website Preview

The latest changes are available as preview in: https://89159711.graphql-config.pages.dev

[github-actions]

diff --git a/website/algolia-lockfile.json b/website/algolia-lockfile.json
index 802afac..05f4d98 100644
--- a/website/algolia-lockfile.json
+++ b/website/algolia-lockfile.json
@@ -72,7 +72,7 @@
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+    "content": "3f2010b9337e2dba13844da178eeceac",
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