feat: add OpenAPI 2.0.x experimental parser

[mrlubos]

Closes #1524

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[changeset-bot]

🦋 Changeset detected

Latest commit: 3b01857

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 11 packages

Name	Type
@hey-api/openapi-ts	Minor
@hey-api/client-fetch	Minor
@hey-api/client-axios	Minor
@hey-api/docs	Minor
@example/openapi-ts-axios	Patch
@example/openapi-ts-fastify	Patch
@example/openapi-ts-fetch	Patch
@example/openapi-ts-tanstack-angular-query-experimental	Patch
@example/openapi-ts-tanstack-react-query	Patch
@example/openapi-ts-tanstack-svelte-query	Patch
@example/openapi-ts-tanstack-vue-query	Patch

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Name	Status	Preview	Comments	Updated (UTC)
hey-api-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 6, 2025 8:09am

[codecov]

Codecov Report

Attention: Patch coverage is 18.16133% with 1816 lines in your changes missing coverage. Please review.

Please upload report for BASE (main@ff29d7b). Learn more about missing BASE report.
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
...ages/openapi-ts/src/openApi/2.0.x/parser/schema.ts	6.42%	670 Missing ⚠️
...s/openapi-ts/src/openApi/2.0.x/parser/operation.ts	8.28%	332 Missing ⚠️
...kages/openapi-ts/src/openApi/2.0.x/parser/index.ts	7.43%	224 Missing ⚠️
.../openapi-ts/src/plugins/@hey-api/schemas/plugin.ts	3.54%	136 Missing ⚠️
...s/openapi-ts/src/openApi/2.0.x/parser/parameter.ts	15.82%	133 Missing ⚠️
.../openapi-ts/src/openApi/2.0.x/parser/pagination.ts	7.27%	102 Missing ⚠️
...ages/openapi-ts/src/plugins/@hey-api/sdk/plugin.ts	25.77%	72 Missing ⚠️
...s/openapi-ts/src/openApi/2.0.x/parser/mediaType.ts	28.57%	50 Missing ⚠️
packages/openapi-ts/src/compiler/types.ts	5.88%	32 Missing ⚠️
...ages/openapi-ts/src/openApi/3.0.x/parser/schema.ts	26.31%	14 Missing ⚠️
... and 8 more

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1525   +/-   ##
=======================================
  Coverage        ?   59.54%           
=======================================
  Files           ?      158           
  Lines           ?    24554           
  Branches        ?     1880           
=======================================
  Hits            ?    14620           
  Misses          ?     9927           
  Partials        ?        7           

Flag	Coverage Δ
unittests	59.54% <18.16%> (?)

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npm i https://pkg.pr.new/@hey-api/openapi-ts@1525

commit: 3b01857