Support more types for set property cmd.

Now support int64, float and bytes.
This CL also allows setting read-only properties or reading
write-only properties through cmdline. The cmdline debug interface
is for test only and does not need to enforce these restrictions.

Test: unit tests.
Bug: b/189969547
Change-Id: Ib0e085f7a68e3d54782c21fb12caa500a0ad82ec