[fontbe] move marks/kern modules into ::features

These are likely going to be sharing a bunch of code in the future, and
I think it makes sense to group all of that under the features module.

fontbe/src/features.rs

@@ -39,6 +39,11 @@ use crate::{
     orchestration::{AnyWorkId, BeWork, Context, FeaAst, FeaRsKerns, FeaRsMarks, WorkId},
 };
 
+mod kern;
+mod marks;
+pub use kern::{create_gather_ir_kerning_work, create_kern_segment_work, create_kerns_work};
+pub use marks::create_mark_work;
+
 #[derive(Debug)]
 pub struct FeatureParsingWork {}
 

fontbe/src/lib.rs

@@ -8,8 +8,6 @@ pub mod glyphs;
 pub mod gvar;
 pub mod head;
 pub mod hvar;
-pub mod kern;
-pub mod marks;
 pub mod metrics_and_limits;
 pub mod mvar;
 pub mod name;

fontc/src/lib.rs

@@ -24,15 +24,16 @@ use std::{
 use fontbe::{
     avar::create_avar_work,
     cmap::create_cmap_work,
-    features::{FeatureCompilationWork, FeatureParsingWork},
+    features::{
+        create_gather_ir_kerning_work, create_kerns_work, create_mark_work, FeatureCompilationWork,
+        FeatureParsingWork,
+    },
     font::create_font_work,
     fvar::create_fvar_work,
     glyphs::{create_glyf_loca_work, create_glyf_work},
     gvar::create_gvar_work,
     head::create_head_work,
     hvar::create_hvar_work,
-    kern::{create_gather_ir_kerning_work, create_kerns_work},
-    marks::create_mark_work,
     metrics_and_limits::create_metric_and_limit_work,
     mvar::create_mvar_work,
     name::create_name_work,

fontc/src/workload.rs

@@ -11,7 +11,7 @@ use std::{
 
 use crossbeam_channel::{Receiver, TryRecvError};
 use fontbe::{
-    kern::create_kern_segment_work,
+    features::create_kern_segment_work,
     orchestration::{AnyWorkId, Context as BeContext, WorkId as BeWorkIdentifier},
 };
 use fontdrasil::{