add: Motoko core (#5873)

* add motoko core

* add motoko core

* add core

* update

* update

* update

* update

* update

* update submodule

* update submodule

Author: jessiemongeon1

.github/workflows/check_submodule.yml

@@ -22,8 +22,8 @@ jobs:
           # dfx 0.27.0
           LATEST_SDK="2c91c38b90850caee98ba968c45c273fa8f43919"
 
-          # motoko new docs 6/10/2025
-          LATEST_MOTOKO="be1f23e340a88c372e0f7911c1cecee323c8f55a"
+          # motoko new docs 7/1/2025
+          LATEST_MOTOKO="cad67688f1d10be9448d9424d2bc71bc894b8bbd"
 
           # Get current submodule commits
           SDK_HASH=$(git submodule status submodules/sdk | awk '{print $1}')

.gitmodules

@@ -4,6 +4,7 @@
 [submodule "submodules/motoko"]
 	path = submodules/motoko
 	url = https://github.com/dfinity/motoko.git
+	branch = revisions
 [submodule "submodules/internetidentity"]
 	path = submodules/internetidentity
 	url = https://github.com/dfinity/internet-identity.git

docs/motoko

@@ -0,0 +1 @@
+../submodules/motoko/doc/md