[GEN-1931]: add Highlight destination support and documentation

[BenElferink]

This pull request introduces support for the Highlight observability backend. The changes include updates to configuration files, documentation, and the addition of new code to handle the Highlight integration.

Key changes:

Configuration and Code Updates:

• Added Highlight struct and methods in common/config/highlight.go to configure Highlight as a destination.
• Included Highlight in the list of available configers in common/config/root.go.
• Defined HighlightDestinationType in common/dests.go.

Documentation Updates:

• Added Highlight as a supported backend in README.md and docs/backends-overview.mdx. [1] [2]
• Created a new documentation page for Highlight in docs/backends/highlight.mdx.
• Updated docs/mint.json and docs/quickstart/next-steps.mdx to include Highlight references. [1] [2]

YAML Configuration:

• Added a new YAML configuration file for Highlight in destinations/data/highlight.yaml.

[notion-workspace]

Destinations: add support for “Highlight”

[BenElferink]

Getting “frame too large” errors with exporter:

{
  "kind": "exporter",
  "data_type": "traces",
  "name": "otlp/highlight-odigos.io.dest.highlight-fprsm",
  "error": "rpc error: code = Unavailable desc = connection error: desc = \"error reading server preface: http2: frame too large\"",
  "interval": "24.376872645s"
}