Change documentation folder to docs

docs/docs/overview/_category_.json

@@ -0,0 +1,8 @@
+{
+  "label": "Getting Started",
+  "position": 1,
+  "link": {
+    "type": "generated-index",
+    "description": "Getting to know Immich"
+  }
+}

docs/docs/overview/introduction.md

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+---
+sidebar_position: 1
+---
+
+# Introduction
+
+This is the first

docs/docs/overview/logo-mearning.md

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+---
+sidebar_position: 2
+---
+
+# Logo meaning

docs/docs/overview/support-the-project.md

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+---
+sidebar_position: 3
+---
+
+# Support the project

docs/docs/overview/technology-stack.md

@@ -0,0 +1,5 @@
+---
+sidebar_position: 4
+---
+
+# Technology stack