feat: Add BA support for SvelteKit

[nicholas-codecov]

Description

This PR adds in direct support for SvelteKit apps through the introduction of a new plugin that is tailored for SvelteKit.

Closes #94

Code Example

// vite.config.ts
import { sveltekit } from "@sveltejs/kit/vite";
import { defineConfig } from "vite";
import { codecovSvelteKitPlugin } from "@codecov/sveltekit-plugin";

export default defineConfig({
  plugins: [
    sveltekit(),
    // Put the Codecov SvelteKit plugin after all other plugins
    codecovSvelteKitPlugin({
      enableBundleAnalysis: true,
      bundleName: "example-sveltekit-bundle",
      uploadToken: process.env.CODECOV_TOKEN,
    }),
  ],
});

Notable Changes

• Add in new @codecov/sveltekit-plugin
• Add in example SvelteKit app
• Add in integration tests for new plugin
• Small tweaks

[codecov]

Codecov Report

Attention: Patch coverage is 28.85906% with 106 lines in your changes are missing coverage. Please review.

Project coverage is 75.74%. Comparing base (cb90ab7) to head (74f9c25).

✅ All tests successful. No failed tests found ☺️

Files	Patch %	Lines
packages/sveltekit-plugin/src/index.ts	0.00%	72 Missing and 1 partial ⚠️
...t-bundle-analysis/sveltekitBundleAnalysisPlugin.ts	50.00%	21 Missing ⚠️
packages/rollup-plugin/src/index.ts	0.00%	4 Missing ⚠️
packages/vite-plugin/src/index.ts	0.00%	4 Missing ⚠️
packages/webpack-plugin/src/index.ts	0.00%	4 Missing ⚠️

Additional details and impacted files

Components	Coverage Δ
Plugin core	97.40% <ø> (ø)
Rollup plugin	10.44% <0.00%> (-0.12%)	⬇️
Vite plugin	10.60% <0.00%> (-0.13%)	⬇️
Webpack plugin	26.20% <0.00%> (-0.24%)	⬇️

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[codecov]

Bundle Report

Changes will decrease total bundle size by 49.2kB ⬇️

Bundle name	Size	Change
@codecov/sveltekit-plugin-cjs	1.3kB	1.3kB ⬆️
@codecov/sveltekit-plugin-esm	909 bytes	909 bytes ⬆️
@codecov/bundler-plugin-core-esm	33.69kB	27.13kB ⬆️
@codecov/nuxt-plugin-esm	855 bytes	0 bytes
@codecov/rollup-plugin-cjs	2.93kB	0 bytes
@codecov/webpack-plugin-esm	1.44kB	1.41kB ⬇️
@codecov/vite-plugin-esm	1.26kB	1.15kB ⬇️
@codecov/example-next-app-client-array-push	894.27kB	0 bytes
@codecov/example-vite-app-esm	150.61kB	0 bytes
@codecov/vite-plugin-cjs	2.92kB	0 bytes
@codecov/bundler-plugin-core-cjs	37.85kB	0 bytes
@codecov/rollup-plugin-esm	1.32kB	155 bytes ⬆️
@codecov/example-next-app-server-cjs	325.59kB	0 bytes
@codecov/example-next-app-edge-server-array-push	306 bytes	0 bytes
@codecov/example-rollup-app-iife	95.45kB	0 bytes
@codecov/example-webpack-app-array-push	(removed)	71.19kB ⬇️
@codecov/nuxt-plugin-cjs	(removed)	1.38kB ⬇️
@codecov/webpack-plugin-cjs	(removed)	3.56kB ⬇️

[codecov-staging]

Bundle Report

Changes will increase total bundle size by 67.54kB ⬆️

Bundle name	Size	Change
@codecov/nuxt-plugin-cjs	1.38kB	0 bytes
@codecov/nuxt-plugin-esm	855 bytes	0 bytes
@codecov/vite-plugin-esm	2.41kB	1.3kB ⬆️
@codecov/sveltekit-plugin-esm	1.06kB	1.06kB ⬆️
@codecov/webpack-plugin-cjs	3.56kB	3.56kB ⬆️
@codecov/rollup-plugin-esm	2.4kB	0 bytes
@codecov/webpack-plugin-esm	1.44kB	156 bytes ⬆️
@codecov/example-vite-app-esm	150.61kB	0 bytes
@codecov/bundler-plugin-core-esm	33.69kB	27.13kB ⬆️
@codecov/example-next-app-server-cjs	325.59kB	0 bytes
@codecov/example-next-app-client-array-push	894.27kB	0 bytes
@codecov/example-webpack-app-array-push	71.19kB	71.19kB ⬆️
@codecov/vite-plugin-cjs	2.92kB	0 bytes
@codecov/rollup-plugin-cjs	2.93kB	0 bytes
@codecov/example-rollup-app-iife	95.45kB	0 bytes
@codecov/sveltekit-plugin-cjs	1.3kB	1.3kB ⬆️
@codecov/bundler-plugin-core-cjs	(removed)	37.85kB ⬇️
@codecov/example-next-app-edge-server-array-push	(removed)	306 bytes ⬇️