Fastify test porting

[pmarchini]

Add the files you're working on here

[iamgiolaga]

custom-http-server.test.js

[stojkov-z]

content-type.test.js

[kriskw1999]

connectionTimeout.test.js

[stojkov-z]

context-config.test.js

[kriskw1999]

route.6.test.js

[KristianLentino99]

buffer.test.js

[federicogualdi]

serialize-response.test.js

link PR:
fastify/fastify#5775

[KristianLentino99]

async-await.test.js

[kriskw1999]

https://github.com/fastify/fastify/pull/5772/files

[kriskw1999]

[kriskw1999]

prendo route.5.test.js

[KristianLentino99]

Prendo

• async-dispose.test
• has-route.test

[stojkov-z]

decorator.test.js

[KristianLentino99]

delete.test.js

[kriskw1999]

route.4.test