Add lua support through local-lua-debugger-vscode

Add the lua adapter to gadgets.py and installer.py, update the README.md
file and create basic tests using lua, luajit and love.

support/test/lua/love/main.lua

@@ -0,0 +1,21 @@
+if pcall(require, 'lldebugger') then
+  require('lldebugger').start()
+end
+
+local rect = {0, 0, 64, 64}
+
+
+function love.update(dt)
+  rect[1] = rect[1] + 10 * dt
+  rect[2] = rect[2] + 10 * dt
+end
+
+
+function love.draw()
+  love.graphics.rectangle('fill', rect[1], rect[2], rect[3], rect[4])
+end
+
+
+function love.keypressed()
+  love.event.quit()
+end