feat: Rename ESM loader hooks to import and loader

[lforst]

Based on feedback in #11338 (comment) I decided it would make sense to rename our ESM hooks to something that is more in line with the Node.js interface to register the hooks.

Old

• Node <=18.18.2: node --loader=@sentry/node/hook app.js
• Node >=18.19.0: node --import=@sentry/node/register app.js

New

• Node <=18.18.2: node --loader=@sentry/node/loader app.js
• Node >=18.19.0: node --import=@sentry/node/import app.js

[timfish]

When I first saw the two new paths, they read as exactly the same string for me for a good few seconds. I think this is partly because I wasn't fully caffeinated but also because they're the same length and both end in -hook.

• Node <=18.18.2: node --loader=@sentry/node/loader-hook app.js
• Node >=18.19.0: node --import=@sentry/node/import-hook app.js

Maybe they're better without -hook?

• Node <=18.18.2: node --loader=@sentry/node/loader app.js
• Node >=18.19.0: node --import=@sentry/node/import app.js

[mydea]

For me omiting -hook makes sense to, but no strong feelings - I'm fine either way!

[lforst]

Changed to omitting the -hook suffix