docs: typescript issue template

.github/ISSUE_TEMPLATE/typescript.md

@@ -0,0 +1,42 @@
+---
+name: Missing or incorrect type definition
+about: Please use for issues related to typescript types
+title: ''
+labels: 'typescript'
+assignees: ''
+
+---
+
+<!--
+Frequently Asked Questions: https://github.com/epoberezkin/ajv/blob/master/FAQ.md
+
+This template is for issues about missing or incorrect type definition and other typescript-related issues.
+For other issues please see https://github.com/epoberezkin/ajv/blob/master/CONTRIBUTING.md
+-->
+
+**What version of Ajv are you using? Does the issue happen if you use the latest version?**
+
+
+**Your typescript code**
+
+<!--
+Please make it as small as posssible to reproduce the issue
+-->
+
+```typescript
+
+
+```
+
+
+**Typescript compiler error messages**
+
+```
+
+
+```
+
+**Describe the change that should be made to address the issue?**
+
+
+**Are you going to resolve the issue?**