cmd/dlv,_scripts: move things that use x/tools/go/packages to new repo

Move things that depend on golang.org/x/tools/go/packages to a new
repository so that they can use the latest version of that package
without forcing delve itself to need the latest version of Go.

Author: aarzilli

Documentation/usage/dlv_debug.md

@@ -19,9 +19,9 @@ dlv debug [package] [flags]
 
 ```
       --continue        Continue the debugged process on start.
-      --rr-cleanup      Delete directory containing debug recording on detach. (default true)
   -h, --help            help for debug
       --output string   Output path for the binary.
+      --rr-cleanup      Delete directory containing debug recording on detach. (default true)
       --tty string      TTY to use for the target program
 ```
 

Documentation/usage/dlv_exec.md

@@ -19,10 +19,10 @@ dlv exec <path/to/binary> [flags]
 ### Options
 
 ```
-      --continue      Continue the debugged process on start.
+      --continue     Continue the debugged process on start.
+  -h, --help         help for exec
       --rr-cleanup   Delete directory containing debug recording on detach. (default true)
-  -h, --help          help for exec
-      --tty string    TTY to use for the target program
+      --tty string   TTY to use for the target program
 ```
 
 ### Options inherited from parent commands