chore(knip): add knip ignore configuration

This adds a knip configuration to exclude standalone example scripts, specific lint-staged dependencies, and submodule directories.

The changes reduce noise in dependency and file usage reporting so the tool focuses on relevant parts of the codebase.

Author: asyrjasalo

knip.jsonc

@@ -0,0 +1,14 @@
+{
+  // Ignore standalone example scripts that are meant to be run directly
+  "ignoreFiles": [
+    "examples/sdk/**"
+  ],
+  // Ignore packages used via lint-staged (not direct imports)
+  "ignoreDependencies": [
+    "@secretlint/secretlint-rule-preset-recommend"
+  ],
+  // Ignore submodule directories
+  "ignore": [
+    ".pi/git/**"
+  ]
+}