Add syntax highlighting for Solidity

[slinlee]

TODO:

• Add fork of tree-sitter-solidity that includes src/ and the generated files.
• Add queries for highlighting

Resolves #1853

[slinlee]

@the-mikedavis I've got another basic question. After adding the highlight queries, when I try to open a .sol file I get this error:

thread 'main' panicked at 'Could not parse queries for language "solidity". Are your grammars out of sync? Try running 'hx --grammar fetch' and 'hx --grammar build'. This query could not be parsed: QueryError { row: 0, column: 0, offset: 0, message: "Incompatible language version 11. Expected minimum 13, maximum 14", kind: Language }', helix-core/src/syntax.rs:384:43
stack backtrace:
   0: rust_begin_unwind
             at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:498:5
   1: core::panicking::panic_fmt
             at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/panicking.rs:116:14
   2: helix_core::syntax::LanguageConfiguration::initialize_highlight
   3: once_cell::imp::OnceCell<T>::initialize::{{closure}}
   4: once_cell::imp::initialize_inner
   5: once_cell::imp::OnceCell<T>::initialize
   6: helix_view::document::Document::set_language
   7: helix_view::document::Document::open
   8: helix_view::editor::Editor::open
   9: helix_term::application::Application::new
  10: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
  11: tokio::park::thread::CachedParkThread::block_on
  12: tokio::runtime::thread_pool::ThreadPool::block_on
  13: tokio::runtime::Runtime::block_on
  14: hx::main
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

It happens both with an existing file, or creating a new one: hx new.sol

[archseer]

Looks like the parser was generated with an old tree-sitter CLI

[slinlee]

Looks like the parser was generated with an old tree-sitter CLI

Thanks! Note to myself: don't use the tree-sitter-cli installed via npm. It's older and has fewer features.

[the-mikedavis]

Nice work!