Add PR & issue template (#9)

Author: kadiryazici

.github/issue_template.md

@@ -0,0 +1,9 @@
+**`Environment (Required):`**
+  - **`OS:`**: <!--EXAMPLE--> Windows 
+  - **`Version:`**: <!--EXAMPLE--> 10
+
+**`Issue explanation (Required):`**
+  - EXAMPLE: I was using this but that happened wtf is this library doing I am not gonna use it again.
+
+**`Extra information (Optional):`**
+  - EXAMPLE: Hi my name is Cristiano Ronaldo

.github/pull_request_template.md

@@ -0,0 +1,4 @@
+Closes: <!--If his PR does not solve an issue, remove this line--> ISSUE_LINK
+
+**`Explanation (Required):`**
+  - EXPLANATION_HERE