Add suffices to scripts in scripts-dev (#12137)

* Rename scripts-dev to have suffices

* Update references to `scripts-dev`

* Changelog

* These scripts don't pass mypy

scripts-dev/generate_sample_config.sh

@@ -15,11 +15,11 @@ check() {
 
 if [ "$1" == "--check" ]; then
     diff -u "$SAMPLE_CONFIG" <(synapse/_scripts/generate_config.py --header-file docs/.sample_config_header.yaml) >/dev/null || {
-        echo -e "\e[1m\e[31m$SAMPLE_CONFIG is not up-to-date. Regenerate it with \`scripts-dev/generate_sample_config\`.\e[0m" >&2
+        echo -e "\e[1m\e[31m$SAMPLE_CONFIG is not up-to-date. Regenerate it with \`scripts-dev/generate_sample_config.sh\`.\e[0m" >&2
         exit 1
     }
     diff -u "$SAMPLE_LOG_CONFIG" <(synapse/_scripts/generate_log_config.py) >/dev/null || {
-        echo -e "\e[1m\e[31m$SAMPLE_LOG_CONFIG is not up-to-date. Regenerate it with \`scripts-dev/generate_sample_config\`.\e[0m" >&2
+        echo -e "\e[1m\e[31m$SAMPLE_LOG_CONFIG is not up-to-date. Regenerate it with \`scripts-dev/generate_sample_config.sh\`.\e[0m" >&2
         exit 1
     }
 else

scripts-dev/lint.sh

@@ -85,8 +85,6 @@ else
           "synapse" "docker" "tests"
           # annoyingly, black doesn't find these so we have to list them
           "scripts-dev"
-          "scripts-dev/build_debian_packages"
-          "scripts-dev/sign_json"
           "contrib" "synctl" "setup.py" "synmark" "stubs" ".ci"
       )
   fi