Refactor TS build and fix testing

This change is largely just moving files with minor tweaks to them to fix,
the rest of the commit is build process changes:

- The addons/ and test/ dirs have been moved to src/
- The build directory has been removed
- TypeScript builds are output in out/, this is where tests are run
- The demo now relies on the dist/ build which is performed as part of ./bin/build
- Addons are now shipped under the ./build directory

src/test/escape_sequence_files/NOTES

@@ -0,0 +1,21 @@
+All tests are made for 80x25 terminal. Make sure to run tests with 80x25.
+
+Create .text files from xterm (expected output)
+- open xterm
+- resize xterm to 80x25
+- run `python run_tests.py`
+- copy & paste whole window output into editor
+- add 26th empty line (due to line handling in toString) - not a bug, a feature ;)
+- advance to next test with ^D
+
+
+Known problems
+##############
+
+
+t0031-HBP:
+    - no documentation at all about CSIj found - skipping
+
+t0050-ICH:
+    - bug in xterm? (cant ICH last real char, always sticks to last col)
+    - text used from https://github.com/MarkLodato/vt100-parser/blob/master/test/t0050-ICH.text