feat: add before-submit-patch article

Author: SimoneCheng

docs/notes/linux-kernel-bug-fixing-mentorship/_category_.json

@@ -0,0 +1,3 @@
+{
+    "label": "Linux Kernel Bug Fixing Mentorship"
+}

docs/notes/linux-kernel-bug-fixing-mentorship/before-submit-patch.md

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+---
+title: Before Submit Patch
+date: 2025-06-06
+---
+
+There are some steps and knowledge need to know before send patch to kernel.
+
+- setup git send-email environment in local computer, [reference](../Git/git-send-email-gmail.md)
+- subscribe to [linux-kernel-mentee-list](https://subspace.kernel.org/lists.linux.dev.html)
+- read
+    - [Submitting patches: the essential guide to getting your code into the kernel — The Linux Kernel  documentation](https://docs.kernel.org/process/submitting-patches.html)
+    - [A guide to the Kernel Development Process — The Linux Kernel  documentation](https://docs.kernel.org/process/development-process.html)
+    - [Linux Kernel patch submission checklist — The Linux Kernel  documentation](https://docs.kernel.org/process/submit-checklist.html)