Add course directory manifest and upload notes

.gitattributes

@@ -1,7 +1,3 @@
-
-# Upload-only course archive
-* filter=lfs diff=lfs merge=lfs -text
-.gitattributes -filter -diff -merge text
-README.md -filter -diff -merge text
-_course_archive/Mechanical-Engineering-Drawing-57/directory-structure.json -filter -diff -merge text
-_course_archive/Mechanical-Engineering-Drawing-57/README.md -filter -diff -merge text
+version https://git-lfs.github.com/spec/v1
+oid sha256:452fc50a5eab33d3c04769331baf8f2b42c235d0cdaf628147e16057cf93c6fb
+size 339

README.md

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6f5d9783a52fc5b58ad6c848bd49b3ade5979abbc87703645b1ab2e78804d8b8
+size 440

_course_archive/Mechanical-Engineering-Drawing-57/directory-structure.json

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5111622a205d2a94d3d2293e91d846fc476de9be861ad50943c936ef41ddf13a
+size 11638