Just call the C lib 'the library' everywhere, don't call it a 'runtime'

script/bindgen.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 output_path=lib/binding/bindings.rs
-header_path='lib/include/tree_sitter/runtime.h'
+header_path='lib/include/tree_sitter/api.h'
 
 bindgen                         \
   --no-layout-tests             \

script/build-lib

@@ -14,7 +14,7 @@ ${CC}                   \
   -I lib/src            \
   -I lib/include        \
   -I lib/utf8proc       \
-  lib/src/runtime.c     \
+  lib/src/lib.c     \
   -o tree-sitter.o
 
 ar rcs libtree-sitter.a tree-sitter.o