added github ISSUE_TEMPLATE

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,24 @@
+<!-- Before creating an issue, please search the issue tracker and make sure fzf-lua is up to date -->
+<!-- If you're submitting a general question or feature request delete sections that don't apply -->
+
+### Info
+
+- Operating System:
+- Shell:
+- Terminal:
+- `nvim --version`:
+- `fzf --version`:
+
+<details>
+<summary>fzf-lua configuration</summary>
+
+<!-- Replace the below your fzf-lua setup -->
+
+```lua
+require('fzf-lua').setup({
+})
+```
+
+</details>
+
+### Description