chore: add omitzero and remove custom serialization

[giortzisg]

Description

This change adds the omitzero field that was introduced in go 1.24, allowing us to remove some custom serialization for skipping empty maps and slices (eg. Span and Trace id types).

Issues

• resolves: Refactor custom serialized types to use omitzero when the SDK bumps to 1.24 #1170
• resolves: GO-111

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[linear]

GO-111 Refactor custom serialized types to use omitzero when the SDK bumps to 1.24

[github-actions]

Semver Impact of This PR

🟢 Patch (bug fixes)

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Breaking Changes 🛠

• Add support for go 1.26 by giortzisg in #1193
  • bump minimum supported go version to 1.24

New Features ✨

• Log specific message for RequestEntityTooLarge by giortzisg in #1185

Bug Fixes 🐛

• Ensure correct signal delivery on multi-client setups by giortzisg in #1190

Internal Changes 🔧

Deps

• Bump golang.org/x/crypto to 0.48.0 by giortzisg in #1196
• Use go1.24.0 by giortzisg in #1195
• Bump github.com/gofiber/fiber/v2 from 2.52.9 to 2.52.11 in /fiber by dependabot in #1191
• Bump getsentry/craft from 2.19.0 to 2.20.1 by dependabot in #1187

Other

• Add omitzero and remove custom serialization by giortzisg in #1197

• Rename Telemetry Processor components by giortzisg in #1186

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