Change in pysim[master]: Add a new pySim-shell program

[laforge]

Hello Jenkins Builder, 

I'd like you to reexamine a change. Please visit

    https://gerrit.osmocom.org/c/pysim/+/23175

to look at the new patch set (#4).

Change subject: Add a new pySim-shell program
......................................................................

Add a new pySim-shell program

pySim-prog was nice when there were only 5 parameters on a SIM that we
could program, and where the use case was pretty limited.  Today, we
have SIM/USIM/ISIM cards with hundreds of files and even more parameters
to program.  We cannot add a command line argument for each file to
pySim-prog.

Instead, this introduces an interactive command-line shell / REPL,
in which one can navigate the file system of the card, read and update
files both in raw format and in decoded/parsed format.

The idea is primarily inspired by Henryk Ploatz' venerable
cyberflex-shell, but implemented on a more modern basis using
the cmd2 python module.

Most code by Harald Welte. Some bug fixes by Philipp Maier
have been squashed.

Change-Id: Iad117596e922223bdc1e5b956f84844b7c577e02
Related: OS#4963
---
A pySim-shell.py
M pySim/exceptions.py
A pySim/filesystem.py
A pySim/ts_102_221.py
M pySim/ts_31_102.py
M pySim/ts_31_103.py
M pySim/ts_51_011.py
7 files changed, 1,799 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/75/23175/4
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Gerrit-Project: pysim
Gerrit-Branch: master
Gerrit-Change-Id: Iad117596e922223bdc1e5b956f84844b7c577e02
Gerrit-Change-Number: 23175
Gerrit-PatchSet: 4
Gerrit-Owner: laforge <laforge at osmocom.org>
Gerrit-Reviewer: Jenkins Builder
Gerrit-MessageType: newpatchset
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