[Development] Specify extra directory as a designated ignored folder (#2593)

* Add `extra` directory as a designated ignored folder

Excludes `extra/` from version tracking, file formatters, and file checks.

* Remove pytest cache from exclusion rules

Python test discovery is easy enough to disable for the workspace in VS Code's settings and pytest does not serve any purpose in the context of the project anyway.

.dprint.json

@@ -27,7 +27,9 @@
         "licenses.json",
         ".dmypy.json",
         "qt/bundle/PyOxidizer",
-        "target"
+        "target",
+        ".mypy_cache",
+        "extra"
     ],
     "plugins": [
         "https://plugins.dprint.dev/typescript-0.85.1.wasm",

.eslintrc.js

@@ -50,7 +50,7 @@ module.exports = {
         },
     ],
     env: { browser: true },
-    ignorePatterns: ["backend_proto.d.ts", "*.svelte.d.ts", "vendor"],
+    ignorePatterns: ["backend_proto.d.ts", "*.svelte.d.ts", "vendor", "extra/*"],
     globals: {
         globalThis: false,
         NodeListOf: false,

.gitignore

@@ -13,3 +13,4 @@ node_modules
 .n2_db
 .ninja_log
 .ninja_deps
+/extra

docs/development.md

@@ -95,6 +95,10 @@ When formatting issues are reported, they can be fixed with
 cargo clippy --fix
 ```
 
+## Excluding your own untracked files from formatting and checks
+
+If you want to add files or folders to the project tree that should be excluded from version tracking and not be matched by formatters and checks, place them in an `extra` folder and they will automatically be ignored.
+
 ## Optimized builds
 
 The `./run` command will create a non-optimized build by default. This is faster

tools/minilints/src/main.rs

@@ -40,6 +40,8 @@ const IGNORED_FOLDERS: &[&str] = &[
     "./tools/workspace-hack",
     "./qt/bundle/PyOxidizer",
     "./target",
+    ".mypy_cache",
+    "./extra",
 ];
 
 fn main() -> Result<()> {