Update installation instructions

docs/docs/getting-started/setting-up.mdx

@@ -31,7 +31,9 @@ You'll need to execute all commands in your project root.
 <TabItem value="direct-develop" label="Develop branch">
 ```bash
 git clone https://git.staropensource.de/StarOpenSource/CORE.git CORE
-rm -rf CORE/project.godot
+cd CORE
+git checkout develop
+rm -rf project.godot
 ```
 </TabItem>
 <TabItem value="direct-stable" label="Stable branch" default>
@@ -45,7 +47,9 @@ rm -rf project.godot
 <TabItem value="submodule-develop" label="Develop branch (submodule)">
 ```bash
 git submodule add https://git.staropensource.de/StarOpenSource/CORE.git CORE
-rm -rf CORE/project.godot
+cd CORE
+git checkout develop
+rm -rf project.godot
 ```
 </TabItem>
 <TabItem value="submodule-stable" label="Stable branch (submodule)">

docs/static/dist/core.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://be0kbjyepldrd"
+path="res://.godot/imported/core.png-14d81fc9b3dc0a24eb68b48b67e98124.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://docs/static/dist/core.png"
+dest_files=["res://.godot/imported/core.png-14d81fc9b3dc0a24eb68b48b67e98124.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1