fix(test-lexarg)!: Clarify struct relationship

I was confused when coming back to the code so the naming being more
specific like this didn't help.

Author: epage

crates/libtest-lexarg/examples/libtest-cli.rs

@@ -1,7 +1,7 @@
 fn main() -> lexarg::Result<()> {
     use lexarg::prelude::*;
 
-    let mut test_opts = libtest_lexarg::TestOptsParseState::new();
+    let mut test_opts = libtest_lexarg::TestOptsBuilder::new();
 
     let raw = std::env::args_os().collect::<Vec<_>>();
     let mut parser = lexarg::Parser::new(&raw);

crates/libtest-lexarg/src/lib.rs

@@ -1,6 +1,6 @@
 //! libtest-compatible argument parser
 //!
-//! This does not drive parsing but provides [`TestOptsParseState`] to plug into the parsing,
+//! This does not drive parsing but provides [`TestOptsBuilder`] to plug into the parsing,
 //! allowing additional parsers to be integrated.
 //!
 //! ## Example
@@ -18,7 +18,7 @@ use lexarg_error::ErrorContext;
 
 /// Parsed command-line options
 ///
-/// To parse, see [`TestOptsParseState`]
+/// To parse, see [`TestOptsBuilder`]
 #[derive(Debug, Default)]
 pub struct TestOpts {
     pub list: bool,
@@ -288,17 +288,17 @@ Test Attributes:
 
 /// Intermediate CLI parser state for [`TestOpts`]
 ///
-/// See [`TestOptsParseState::parse_next`]
+/// See [`TestOptsBuilder::parse_next`]
 #[derive(Debug, Default)]
-pub struct TestOptsParseState {
+pub struct TestOptsBuilder {
     opts: TestOpts,
     quiet: bool,
     format: Option<OutputFormat>,
     include_ignored: bool,
     ignored: bool,
 }
 
-impl TestOptsParseState {
+impl TestOptsBuilder {
     pub fn new() -> Self {
         Default::default()
     }

crates/libtest2-harness/src/harness.rs

@@ -73,7 +73,7 @@ const ERROR_EXIT_CODE: i32 = 101;
 fn parse<'p>(
     parser: &mut cli::Parser<'p>,
 ) -> Result<libtest_lexarg::TestOpts, cli::ErrorContext<'p>> {
-    let mut test_opts = libtest_lexarg::TestOptsParseState::new();
+    let mut test_opts = libtest_lexarg::TestOptsBuilder::new();
 
     let bin = parser
         .next_raw()