Huge refactoring

util_scripts/gigachat_get_models.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/bash
+
+if [ -n "$SBER_TOKEN" ]; then
+    curl https://api.giga.chat/v1/models -k \
+        -H 'Accept: application/json' \
+        -H "Authorization: Bearer $SBER_TOKEN"
+else
+    echo "Please set SBER_TOKEN envvar"
+fi