Give gemtext parser a more uniform interface wrt other parsers

Dependencies

• [2] KP6SZZ34 Fix building without parsers
• [3] Y55SCAUN Finish gemtext parsing implementation
• [4] BOFUYB6I Add documentation and implement some feedback from Discord (https://discord.com/channels/273534239310479360/354038657075904544/796256815024701480)
• [5] JBZGFYVO Add nom parsers for main types
• [*] 5II6T7YE Add gemini library

Change contents

• replacement in gemini/src/lib.rs at line 33
  [3.2225]→[3.2225:2277](∅→∅)
  − use crate::{header, request, response, status};
  [3.2225]

  [3.2277]
  + use crate::{gemtext, header, request, response, status};
• replacement in gemini/src/lib.rs at line 43
  [3.2473]→[3.2473:2595](∅→∅)
  − pub fn [< parse_ $name >]<'i>(input: impl AsRef<[u8]> + 'i) -> Result<$name::$type, Error<Vec<u8>>> {
  [3.2473]

  [3.2595]
  + pub fn [< parse_ $name >](input: impl AsRef<[u8]>) -> Result<$name::$type, Error<Vec<u8>>> {
• edit in gemini/src/lib.rs at line 68
  [3.3367]

  [3.3367]
  +

  + /// Parse a gemtext document from utf-8 text.

  + pub fn parse_gemtext(input: impl AsRef<str>) -> Result<gemtext::Builder, Error<String>> {

  + let input = input.as_ref();

  + match gemtext::parse::document(input).finish() {

  + Ok((_, b)) => Ok(b),

  + Err(Error { input, code }) => Err({

  + let input = input.to_string();

  + Error { input, code }

  + }),

  + }

  + }
• replacement in gemini/src/lib.rs at line 83
  [2.28]→[2.28:107](∅→∅),[3.32]→[3.3370:3446](∅→∅),[2.107]→[3.3370:3446](∅→∅),[3.3370]→[3.3370:3446](∅→∅)
  − pub use gemtext::parse::document as parse_gemtext;

  − #[cfg(feature = "parsers")]

  − pub use parse::{parse_header, parse_request, parse_response, parse_status};
  [2.28]
  + pub use parse::{parse_gemtext, parse_header, parse_request, parse_response, parse_status};