chore(*): add PR template, add TSDoc comments

src/types/LintConfig.ts

@@ -3,6 +3,13 @@ import { noEncodedPasswords } from '../rules/noEncodedPasswords'
 import { noTrailingSpaces } from '../rules/noTrailingSpaces'
 import { FileLintRule, LineLintRule } from './LintRule'
 
+/**
+ * LintConfig is the logical representation of the .sasjslint file.
+ * It exposes two sets of rules - one to be run against each line in a file,
+ * and one to be run once per file.
+ *
+ * More types of rules, when available, will be added here.
+ */
 export class LintConfig {
   readonly lineLintRules: LineLintRule[] = []
   readonly fileLintRules: FileLintRule[] = []