Kovri: implement preliminary Windows install script

- Unfinished, very buggy, see TODO's
- At a minimum, installs needed files

References:
- monero-project/meta#50
- monero-project/meta#35
- monero-project/kovri#362

kovri/install.bat

@@ -0,0 +1,95 @@
+@ECHO OFF
+
+REM Copyright (c) 2017, The Kovri I2P Router Project
+REM
+REM All rights reserved.
+REM
+REM Redistribution and use in source and binary forms, with or without modification, are
+REM permitted provided that the following conditions are met:
+REM
+REM 1. Redistributions of source code must retain the above copyright notice, this list of
+REM    conditions and the following disclaimer.
+REM
+REM 2. Redistributions in binary form must reproduce the above copyright notice, this list
+REM    of conditions and the following disclaimer in the documentation and/or other
+REM    materials provided with the distribution.
+REM
+REM 3. Neither the name of the copyright holder nor the names of its contributors may be
+REM    used to endorse or promote products derived from this software without specific
+REM    prior written permission.
+REM
+REM THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+REM EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+REM MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+REM THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+REM SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+REM PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+REM INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+REM STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+REM THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+SET _banner=The Kovri I2P Router Project Installer
+SET _data=%APPDATA%\Kovri
+
+REM Backup existing installation
+SET _config=%_data%\config
+SET _kovri_conf=%_config%\kovri.conf
+SET _tunnels_conf=%_config%\tunnels.conf
+
+REM TODO(anonimal): implement
+REM IF EXIST "%_config%%" (
+REM   ECHO Begin configuration backup...
+REM   IF EXIST "%_kovri_conf%" (
+REM     MOVE /Y "%_kovri_conf%" "%_kovri_conf%".bak
+REM   )
+REM   IF EXIST "%_tunnels_conf%" (
+REM     MOVE /Y "%_tunnels_conf%" "%_tunnels_conf%".bak
+REM   )
+REM   CALL :catch could not backup configuration
+REM )
+
+REM Remove existing install
+SET _core=%_data%\core
+SET _client=%_data%\client
+SET _installed[0]="%_core%"
+SET _installed[1]="%_client%\address_book\addresses"
+SET _installed[2]="%_client%\address_book\addresses.csv"
+SET _installed[3]="%_client%\certificates"
+
+REM TODO(anonimal): implement
+REM FOR /F "tokens=2 delims==" %%s IN ('set _installed[') DO IF EXIST %%s (ECHO Removing %%s && DEL /S /Q %%s)
+CALL :catch could not remove existing install
+
+REM Create new install
+REM TODO(anonimal): Install to Program Files?
+SET _path=%USERPROFILE%\Desktop
+SET _binary=kovri.exe
+
+IF NOT EXIST "%_data%%" (
+  ECHO Creating "%_data%"
+  MKDIR "%_data%"
+  CALL :catch could not create "%_data%"
+)
+
+IF NOT EXIST "%_path%%" (
+  ECHO Creating "%_path%"
+  MKDIR "%_path%"
+  CALL :catch could not create "%_path%"
+)
+
+SET _resources[0]=client
+SET _resources[1]=config
+SET _resources[2]=%_binary%
+
+REM TODO(anonimal): prefer to copy
+FOR /F "tokens=2 delims==" %%s IN ('set _resources[') DO IF %%s == %_binary% (MOVE /Y %%s "%_path%") else (MOVE /Y %%s "%_data%")
+CALL :catch could not install resources
+
+ECHO Installation success!
+
+:catch
+IF %ERRORLEVEL% NEQ 0 (
+  ECHO " [ERROR] Failed to install: '%*'"
+  EXIT /B 1
+)
+GOTO :EOF