build(revset): build parser as part of build.rs

Usually, I avoid using `build.rs` since it potentially makes the build slower and harder to analyze statically. But I've forgotten to manually run `lalrpop` enough that it's easier to add the generation to the build script.

.editorconfig

@@ -4,6 +4,6 @@ root = true
 end_of_line = lf
 trim_trailing_whitespace = true
 
-[*.rs]
+[*.{rs,lalrpop}]
 indent_style = space
 indent_size = 4

git-branchless/Cargo.toml

@@ -57,6 +57,9 @@ insta = "1.16.0"
 portable-pty = "0.7.0"
 vt100 = "0.15.1"
 
+[build-dependencies]
+lalrpop = "0.19.8"
+
 [package.metadata.release]
 pre-release-replacements = [
   { file = "../CHANGELOG.md", search = "Unreleased", replace = "{{version}}", min = 1 },

git-branchless/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    lalrpop::process_root().unwrap();
+}