feat: Hooks

[aklinker1]

This closes #414, #417, #405.

// wxt.config.ts
export default defineConfig({
  hooks: {
    build: {
      async before() {
        // Check types before building
        await execa("tsc --noEmit")
      },
    },
  },
});

Hooks implemented:

• ready
• build:before
• build:manifestGenerated
• build:done
• entrypoints:resolved
• entrypoints:grouped

I have also setup E2E tests to call startServer, so we can add E2E tests for dev mode, which are sorely needed!

Todo

• Use hookable
• Update config
• Call hooks

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (bb02264) 81.95% compared to head (da60375) 85.50%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #419      +/-   ##
==========================================
+ Coverage   81.95%   85.50%   +3.55%     
==========================================
  Files         107      107              
  Lines        7763     7837      +74     
  Branches      710      754      +44     
==========================================
+ Hits         6362     6701     +339     
+ Misses       1387     1123     -264     
+ Partials       14       13       -1     

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