Replace system mods by submodules

This is necessary to use the minetest server provided by flatpack.

.gitmodules

@@ -133,3 +133,21 @@
 [submodule "3d_armor"]
 	path = 3d_armor
 	url = https://github.com/minetest-mods/3d_armor
+[submodule "craftguide"]
+	path = craftguide
+	url = https://github.com/minetest-mods/craftguide
+[submodule "currency"]
+	path = currency
+	url = https://gitlab.com/VanessaE/currency
+[submodule "infinite-chest"]
+	path = infinite-chest
+	url = https://github.com/cornernote/minetest-infinite_chest
+[submodule "intllib"]
+	path = intllib
+	url = https://github.com/minetest-mods/intllib
+[submodule "unified-inventory"]
+	path = unified-inventory
+	url = https://github.com/minetest-mods/unified_inventory
+[submodule "character-creator"]
+	path = character-creator
+	url = https://github.com/minetest-mods/character_creator

README.md

@@ -9,26 +9,13 @@ patches in the `patches` directory.  These can be applied with `quilt push -a`
 Before updating mods, unapply the patches with `quilt pop -a`.  See also section
 on [setting up git](#git-setup) below.
 
-Some standard extension mods are not included here, because they are shipped
-with Debian.  Run the following command to satisfy these dependencies:
-
-```sh
-sudo apt install                    \
-     minetest-mod-character-creator \
-     minetest-mod-craftguide        \
-     minetest-mod-currency          \
-     minetest-mod-infinite-chest    \
-     minetest-mod-intllib           \
-     minetest-mod-unified-inventory
-```
-
-Afterwards, use git to check out all submodules like so:
+After cloning, use git to check out all submodules like so:
 
 ```sh
 git submodule update --init
 ```
 
-Then start minetest, edit `world.mt` to enable all wanted modules, and restart
+Then start minetest, edit `world.mt` to enable all desired modules, and restart
 again.  Enjoy! ☺
 
 For licenses and copyrights see the corresponding mods.  All that remains is

character-creator

@@ -0,0 +1 @@
+Subproject commit e026a1f3d3a2bdaf04854a29ff24cbe81345e221

craftguide

@@ -0,0 +1 @@
+Subproject commit f3799989435d1f7a6e4307572dafd93a79410f15

currency

@@ -0,0 +1 @@
+Subproject commit 6b2bbb4df60019174ea6db1c13535d6bf893d153

infinite-chest

@@ -0,0 +1 @@
+Subproject commit bd6685640c07185679df0110b5e8fc2b1e0f3119

intllib

@@ -0,0 +1 @@
+Subproject commit 6ebdc5388dd8583fbcbb556817769604a5a4cddf

unified-inventory

@@ -0,0 +1 @@
+Subproject commit 8c84751ff814ac5da75b1536bdf6961d9172b315