Run eslint in CI (#3487)

* Run eslint in CI

* Add linting of e2e

* Fix formatting

* Fix new warnings in e2e

* Fix more new warnings

src/lib/exampleKcl.ts

@@ -38,6 +38,9 @@ const bracket = startSketchOn('XY')
        tags: [getPreviousAdjacentEdge(outerEdge)]
      }, %)`
 
+/**
+ * @throws Error if the search text is not found in the example code.
+ */
 function findLineInExampleCode({
   searchText,
   example = bracket,
@@ -48,6 +51,8 @@ function findLineInExampleCode({
   const lines = example.split('\n')
   const lineNumber = lines.findIndex((l) => l.includes(searchText)) + 1
   if (lineNumber === 0) {
+    // We are exporting a constant, so we don't want to return an Error.
+    // eslint-disable-next-line suggest-no-throw/suggest-no-throw
     throw new Error(
       `Could not find the line with search text "${searchText}" in the example code. Was it removed?`
     )