Scaffolding jdwp for new JDWP debugger project (facebookexperimental#62)

* add buck2

* remove su

* update makefile

* initialize buck2

* add buck2 to root

* add buck2 to root

* Revert "merge auck2"

This reverts commit 8d22386, reversing
changes made to 238cfb0.

* merge buck2

* add placeholder targets

* update pyre configuration

* delete file

* remove buck2  and prelude with version conflicts

* update placeholder targets

* add a temp main py file

* update tests target

* update python toolchains

* add copyright

---------

Co-authored-by: Michael A. Wekesa <Michael A. Wekesa>

projects/jdwp/.pyre_configuration

@@ -0,0 +1,5 @@
+{
+  "targets": [
+    "//projects/jdwp/..."
+  ]
+}