rename the index of columns and keys to fix migration name too long issue (#98)

* rename the index of columns and keys to fix migration name too long issue

* remove igniter/igniterlabs prefix from the index names

Author: obinnaelviso

database/migrations/2020_05_18_000300_create_access_tokens_table.php

@@ -15,9 +15,9 @@ public function up(): void
     {
         Schema::create('igniter_api_access_tokens', function(Blueprint $table): void {
             $table->bigIncrements('id');
-            $table->morphs('tokenable');
+            $table->morphs('tokenable', 'api_access_tokens_tokenable');
             $table->string('name');
-            $table->string('token', 64)->unique();
+            $table->string('token', 64)->unique('api_access_tokens_token_unique');
             $table->text('abilities')->nullable();
             $table->timestamp('last_used_at')->nullable();
             $table->timestamps();