feat(api): derive macros for TryFromConn and Handler

[jbr]

An effort to address #688

There's likely further surface area that could be added eventually, such as:

#[derive(TryFromConn)]
struct CreatePost {
    #[api(state)]
    db: Db,

    #[api(body)]
    input: NewPostInput,

    #[api(header = "x-request-id")]
    request_id: String,

    #[api(param = "team_id")]
    team: TeamId,
}

[github-actions]

Public API Changes

Changes to trillium-api

impl core::default::Default for trillium_api::Halt
pub fn trillium_api::Halt::default() -> trillium_api::Halt
pub mod trillium_api::extractors::deriving
pub use trillium_api::Handler
pub use trillium_api::TryFromConn

[codecov]

Codecov Report

❌ Patch coverage is 70.23256% with 64 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.94%. Comparing base (5ee3d08) to head (520c418).
⚠️ Report is 205 commits behind head on main.

Files with missing lines	Patch %	Lines
api-macros/src/attributes.rs	69.35%	19 Missing ⚠️
api-macros/src/handler.rs	0.00%	18 Missing ⚠️
api-macros/src/try_from_conn.rs	71.05%	11 Missing ⚠️
api-macros/tests/test.rs	8.33%	11 Missing ⚠️
api-macros/src/lib.rs	0.00%	4 Missing ⚠️
api-macros/tests/integration.rs	98.76%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main     #802    +/-   ##
========================================
  Coverage   68.93%   68.94%            
========================================
  Files         337      343     +6     
  Lines       19312    19527   +215     
========================================
+ Hits        13313    13463   +150     
- Misses       5999     6064    +65     

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