Add comprehensive documentation for all project sections

Introduced new and updated documentation files across the docs/ directory, including project structure guides, function library references, and standardized READMEs for ct, install, vm, tools, api, and misc. This update fully documents all nine function libraries, provides quick start and learning paths, and mirrors the project structure for easier navigation and contribution.

docs/misc/alpine-tools.func/ALPINE_TOOLS_FUNC_FLOWCHART.md

@@ -0,0 +1,25 @@
+# alpine-tools.func Flowchart
+
+Alpine tool installation and package management flow.
+
+## Tool Installation on Alpine
+
+```
+apk_update()
+    ↓
+add_community_repo()    [optional]
+    ↓
+apk_add PACKAGES
+    ↓
+Tool Installation
+    ↓
+rc-service start
+    ↓
+rc-update add           [enable at boot]
+    ↓
+Complete ✓
+```
+
+---
+
+**Last Updated**: December 2025