Switched to using pcall for imports

Signed-off-by: Taken <taken@mairimashita.org>

after/plugin/telescope.lua

@@ -1,5 +1,13 @@
-local builtin = require('telescope.builtin')
-local telescope = require('telescope')
+local telescope_setup, telescope = pcall(require, 'telescope')
+if not telescope_setup then
+    return
+end
+
+local builtin_setup, builtin = pcall(require, 'telescope.builtin')
+if not builtin_setup then
+    return
+end
+
 telescope.load_extension('file_browser')
 telescope.load_extension('project')