Remove table generation

This completely removes the `codegen` project, which relied on outdated
libraries to parse DSLs to build the utf8 and vte state tables, to make
the library easier to maintain.

The utf8 table could be completely removed in favor of a `match`
statement, which also lead to a performance improvement with the utf8
parser.

The vte table did not benefit from `match` statements at all and instead
had significantly worse performance with it. To replace the old
codegeneration for vte, the `generate_state_changes` crate has been
created instead, which uses the language's proc_macro feature to create
a `const fn` which will generate the table at compile time.

1 files changed, 0 insertions, 2 deletions

diff --git a/codegen/src/ext/mod.rs b/codegen/src/ext/mod.rs
deleted file mode 100644
index c28d9f7..0000000
--- a/codegen/src/ext/mod.rs
+++ /dev/null
@@ -1,2 +0,0 @@
-pub mod utf8;
-pub mod vt;