BREAKING CHANGE(SmartFileFactory): Refactor to in-memory file API and introduce SmartFileFactory; delegate filesystem operations to @push.rocks/smartfs; bump to 12.0.0

test/testassets/temp/mytest-fromdir.json

@@ -0,0 +1,7 @@
+{
+  "key1": "this works",
+  "key2": "this works too",
+  "key3": {
+    "nestedkey1": "hello"
+  }
+}

test/testassets/temp/stream-mytest.json

@@ -0,0 +1,7 @@
+{
+  "key1": "this works",
+  "key2": "this works too",
+  "key3": {
+    "nestedkey1": "hello"
+  }
+}

test/testassets/temp/subdir/test.txt

@@ -0,0 +1 @@
+directory test content

test/testassets/temp/utf8.txt

@@ -0,0 +1 @@
+hi there

test/testassets/temp/vdir-output/saved1.txt

@@ -0,0 +1 @@
+saved content 1

test/testassets/temp/vdir-output/subdir/saved2.txt

@@ -0,0 +1 @@
+saved content 2