fix(label): allow to use spaces inside the labels (#199)

* chore(git): ignore .idea folder to avoid adding WebStorm files

* test(jest): find all spec files as well

* refactor(labels): create a dedicated function to parse the labels

at first I thought that the parseCommaSeparatedString method was causing the issue so I move it to a dedicated file to test it since it was private
also because I think that this repo could have more clean code and code splitting
anyway this was not the root of the #98 issue :/

* fix(label): allow to use spaces inside the labels

* docs(isLabeled): add JSDoc

* chore(npm): add lint:fix script

src/functions/is-labeled.ts

@@ -0,0 +1,24 @@
+import deburr from 'lodash.deburr';
+import {Issue, Label} from '../IssueProcessor';
+
+/**
+ * @description
+ * Check if the label is listed as a label of the issue
+ *
+ * @param {Readonly<Issue>} issue A GitHub issue containing some labels
+ * @param {Readonly<string>} label The label to check the presence with
+ *
+ * @return {boolean} Return true when the given label is also in the issue labels
+ */
+export function isLabeled(
+  issue: Readonly<Issue>,
+  label: Readonly<string>
+): boolean {
+  return !!issue.labels.find((issueLabel: Readonly<Label>): boolean => {
+    return cleanLabel(label) === cleanLabel(issueLabel.name);
+  });
+}
+
+function cleanLabel(label: Readonly<string>): string {
+  return deburr(label.toLowerCase());
+}