feat: Introduce the obscuri crate family

[kate-shine]

No description provided.

[github-actions]

⚠️ Breaking Changes Detected

error: failed to retrieve local crate data from git revision

Caused by:
    0: failed to retrieve manifest file from git revision source
    1: possibly due to errors: [
         failed to parse /home/runner/work/oxidizer/oxidizer/target/semver-checks/git-origin_main/f6048587ae8282ce87e5602a41c87d31f7393270/Cargo.toml: no `package` table,
         failed when reading /home/runner/work/oxidizer/oxidizer/target/semver-checks/git-origin_main/f6048587ae8282ce87e5602a41c87d31f7393270/scripts/crate-template/Cargo.toml: TOML parse error at line 9, column 26
         |
       9 | keywords = ["oxidizer", {{CRATE_KEYWORDS}}]
         |                          ^
       missing key for inline table element, expected key
       : TOML parse error at line 9, column 26
         |
       9 | keywords = ["oxidizer", {{CRATE_KEYWORDS}}]
         |                          ^
       missing key for inline table element, expected key
       ,
       ]
    2: package `obscuri` not found in /home/runner/work/oxidizer/oxidizer/target/semver-checks/git-origin_main/f6048587ae8282ce87e5602a41c87d31f7393270

Stack backtrace:
   0: anyhow::error::<impl anyhow::Error>::msg
   1: cargo_semver_checks::rustdoc_gen::RustdocFromProjectRoot::get_crate_source
   2: cargo_semver_checks::rustdoc_gen::StatefulRustdocGenerator<cargo_semver_checks::rustdoc_gen::CoupledState>::prepare_generator
   3: cargo_semver_checks::Check::check_release::{{closure}}
   4: cargo_semver_checks::Check::check_release
   5: cargo_semver_checks::exit_on_error
   6: cargo_semver_checks::main
   7: std::sys::backtrace::__rust_begin_short_backtrace
   8: main
   9: <unknown>
  10: __libc_start_main
  11: _start

If the breaking changes are intentional then everything is fine - this message is merely informative.

Remember to apply a version number bump with the correct severity when publishing a version with breaking changes (1.x.x -> 2.x.x or 0.1.x -> 0.2.x).

[codecov]

Codecov Report

❌ Patch coverage is 97.36450% with 53 lines in your changes missing coverage. Please review.
✅ Project coverage is 99.5%. Comparing base (f9dfbba) to head (8947a07).

Files with missing lines	Patch %	Lines
crates/obscuri_macros_impl/src/lib.rs	95.8%	25 Missing ⚠️
crates/obscuri/src/base_uri.rs	96.4%	10 Missing ⚠️
crates/obscuri/src/error.rs	87.7%	7 Missing ⚠️
crates/obscuri/src/uri_safe.rs	92.1%	6 Missing ⚠️
crates/obscuri_macros_impl/src/uri_fragment.rs	82.1%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #265     +/-   ##
========================================
- Coverage   100.0%   99.5%   -0.5%     
========================================
  Files         140     155     +15     
  Lines        8620   10631   +2011     
========================================
+ Hits         8620   10578   +1958     
- Misses          0      53     +53     

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