Revert "Switch to new vendor directory layout"

This reverts commit d5742209d3.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

vendor/github.com/Azure/go-ansiterm/escape_state.go

@@ -1,47 +0,0 @@
-package ansiterm
-
-type EscapeState struct {
-	BaseState
-}
-
-func (escState EscapeState) Handle(b byte) (s State, e error) {
-	logger.Infof("EscapeState::Handle %#x", b)
-	nextState, err := escState.BaseState.Handle(b)
-	if nextState != nil || err != nil {
-		return nextState, err
-	}
-
-	switch {
-	case b == ANSI_ESCAPE_SECONDARY:
-		return escState.parser.CsiEntry, nil
-	case b == ANSI_OSC_STRING_ENTRY:
-		return escState.parser.OscString, nil
-	case sliceContains(Executors, b):
-		return escState, escState.parser.execute()
-	case sliceContains(EscapeToGroundBytes, b):
-		return escState.parser.Ground, nil
-	case sliceContains(Intermeds, b):
-		return escState.parser.EscapeIntermediate, nil
-	}
-
-	return escState, nil
-}
-
-func (escState EscapeState) Transition(s State) error {
-	logger.Infof("Escape::Transition %s --> %s", escState.Name(), s.Name())
-	escState.BaseState.Transition(s)
-
-	switch s {
-	case escState.parser.Ground:
-		return escState.parser.escDispatch()
-	case escState.parser.EscapeIntermediate:
-		return escState.parser.collectInter()
-	}
-
-	return nil
-}
-
-func (escState EscapeState) Enter() error {
-	escState.parser.clear()
-	return nil
-}