add inventory api docs

docs/inventory/02-creating-a-tab.md

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+# Tabs
+Tabs are a great way to make your Containers available to players by showing a CreativeTab-like Button in the Players Inventory.
+
+## Creating a Tab
+To create a Tab, your need to create a new class that extends `AbstractInventoryTab`. 
+
+```java
+public class TestInventoryTab extends AbstractInventoryTab {
+    private final ItemStack iconStack;
+
+    public TestInventoryTab(Item icon) {
+        super(Tooltip.create(Component.literal("Test Tab - " + index)));
+        this.iconStack = icon.getDefaultInstance();
+    }
+
+    @Override
+    protected void renderIcon(GuiGraphics guiGraphics, int mouseX, int mouseY, float partialTicks) {
+        var isTopRow = this.getCurrentTabIndex() < TABS_PER_ROW;
+        guiGraphics.renderFakeItem(this.iconStack, this.getX() + 5, this.getY() + 8 + (isTopRow ? 1 : -1));
+    }
+
+    @Override
+    public void sendOpenContainerPacket() {
+        // Send a packet to the server to request the container to be opened
+    }
+}
+```
+
+The newly created Tab now needs to be registered.
+
+### Architectury
+```java
+ClientLifecycleEvent.CLIENT_SETUP.register(instance -> InventoryTabsTest.init(19));
+```
+### Fabric
+```java
+ClientLifecycleEvents.CLIENT_STARTED.register(minecraft -> InventoryTabs.registerTab(new InventoryTabsTest.TestInventoryTab(Items.DIAMOND)));
+```
+### NeoForge
+```java
+// On NeoForge
+private void clientInit(FMLClientSetupEvent e) {
+    InventoryTabs.registerTab(new InventoryTabsTest.TestInventoryTab(Items.DIAMOND));
+}
+```
+
+## Showing Tabs in your Container
+To show the Tab in your Container, you need to implement the `InventoryTabScreen` in your ContainerScreen class.
+
+```java
+public class CustomContainerScreen<T> extends AbstractContainerScreen<T> implements InventoryTabScreen {
+    private static final Class<TestInventoryTab> TAB_CLASS = TestInventoryTab.class;
+
+    @Override
+    public Class<TestInventoryTab> getTabClass() {
+        return TAB_CLASS;
+    }
+}
+```

docs/inventory/_category_.json

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+{
+  "label": "Inventory",
+  "position": 1
+}

docs/network/01-Installation.md

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+## Architectury
+
+tbd
+
+## Fabric
+
+tbd
+
+## NeoForge
+
+tbd