refactor: plugins subscribe to context events

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Latest commit: dbcadf3f680be0f4c6bbeb510a60ffb81089e4af

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Name	Status	Preview	Comments	Updated (UTC)
hey-api-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 19, 2024 1:19pm

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Codecov Report

Attention: Patch coverage is 18.09382% with 1100 lines in your changes missing coverage. Please review.

Project coverage is 65.64%. Comparing base (ecd9087) to head (dbcadf3). Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/openapi-ts/src/plugins/zod/plugin.ts	7.38%	527 Missing :warning:
...napi-ts/src/plugins/@tanstack/query-core/plugin.ts	0.27%	364 Missing :warning:
...openapi-ts/src/plugins/@hey-api/services/plugin.ts	34.75%	107 Missing :warning:
...api-ts/src/plugins/@hey-api/transformers/plugin.ts	1.38%	71 Missing :warning:
packages/openapi-ts/src/plugins/fastify/plugin.ts	6.25%	15 Missing :warning:
...ckages/openapi-ts/src/plugins/zod/plugin-legacy.ts	15.38%	11 Missing :warning:
packages/openapi-ts/src/ir/context.ts	93.97%	5 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1312 +/- ## ========================================== - Coverage 66.81% 65.64% -1.18% ========================================== Files 136 138 +2 Lines 20244 20762 +518 Branches 1799 1806 +7 ========================================== + Hits 13527 13629 +102 - Misses 6713 7129 +416 Partials 4 4 ``` | [Flag](https://app.codecov.io/gh/hey-api/openapi-ts/pull/1312/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=hey-api) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/hey-api/openapi-ts/pull/1312/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=hey-api) | `65.64% <18.09%> (-1.18%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=hey-api#carryforward-flags-in-the-pull-request-comment) to find out more.

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