Log message:
PR/58110: Added textproc/jnv 0.5.0.

jnv is designed for navigating JSON, offering an interactive JSON viewer
and jq filter editor.
Inspired by jid and jiq.

Features:
  * Interactive JSON viewer and jq filter editor
    * Syntax highlighting for JSON
    * Use jaq to apply jq filter
      * This eliminates the need for users to prepare jq on their own.
  * Capable of accommodating various format
    * Input: File, Stdin
    * Data: A JSON or multiple JSON structures that can be deserialized
      with StreamDeserializer, such as JSON Lines
  * Auto-completion for the filter
    * Only supports:
      * Identity
      * Object Identifier-Index
      * Array Index
  * Hint message to evaluate the filter