Update extension.txt

extension.txt

@@ -1,5 +1,8 @@
 git clone https://github.com/Gourieff/sd-webui-reactor
 git clone --depth 1 https://github.com/Bing-su/adetailer
+git clone --depth 1 https://github.com/hako-mikan/sd-webui-supermerger
+git clone --depth 1 https://github.com/pamparamm/sd-perturbed-attention
+git clone --depth 1 https://github.com/gutris1/sd-fast-pnginfo
 git clone --depth 1 https://github.com/zanllp/sd-webui-infinite-image-browsing
 git clone --depth 1 https://github.com/DominikDoom/a1111-sd-webui-tagcomplete
 git clone --depth 1 https://github.com/thomasasfk/sd-webui-aspect-ratio-helper