feat: include runtime from current directory instead of lib (#2884)

Author: sasq64

NOTICE

@@ -58,6 +58,7 @@ under the licensing terms detailed in LICENSE:
 * Xinquan Xu <[email protected]>
 * Matt Johnson-Pint <[email protected]>
 * Fabián Heredia Montiel <[email protected]>
+* Jonas Minnberg <[email protected]>
 
 Portions of this software are derived from third-party works licensed under
 the following terms:

std/assembly/rt/index-incremental.ts

@@ -1,2 +1,2 @@
-import "rt/tlsf";
-import "rt/itcms";
+import "./tlsf";
+import "./itcms";

std/assembly/rt/index-minimal.ts

@@ -1,2 +1,2 @@
-import "rt/tlsf";
-import "rt/tcms";
+import "./tlsf";
+import "./tcms";

std/assembly/rt/index-stub.ts

@@ -1 +1 @@
-import "rt/stub";
+import "./stub";