Add bash OTA

Signed-off-by: Hưng Phan <phandinhhungvp2001@gmail.com>

README.md

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+Read This Before Proceeding :-
+
+Clone the OTA repo in your ROM directory.
+To generate json and push OTA,
+```bash
+bash OTA/support/ota.sh <device_codename> <rom_folder> <maintainer_name> <maintainer_url> <forum_url>
+
+e.g.
+bash OTA/support/ota.sh wayne pex "Christian de la Cruz" https://t.me/chdelacr https://forum.xda-developers.com/
+```
+NOTES:
+- ROM directory will look for *home/<os_username>/<rom_folder>*.
+- Use double quotes for parameters with more than a single word, like maintainer name in the example above.
+- All parameters are mandatory.

support/ota.sh

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+DEVICE=$1
+ROMDIR=~/$2
+MAINTAINER=$3
+MAINTAINER_URL=$4
+FORUM_URL=$5
+
+# Ensures that mandatory parameters are entered
+if [ $# -lt 5 ]; then
+    echo "Missing mandatory parameters"
+    exit 1
+fi
+
+cd $ROMDIR
+DATETIME=$(grep "ro.cherish.build_date_utc=" out/target/product/$DEVICE/system/build.prop | cut -d "=" -f 2)
+FILENAME=$(find out/target/product/$DEVICE/Cherish*.zip | cut -d "/" -f 5)
+ID=$(md5sum out/target/product/$DEVICE/Cherish*.zip | cut -d " " -f 1)
+FILEHASH=$ID
+SIZE=$(wc -c out/target/product/$DEVICE/Cherish*.zip | awk '{print $1}')
+URL="https://sourceforge.net/projects/cherish-os/files/device/$DEVICE/$FILENAME/download"
+VERSION="11"
+DONATE_URL="https://www.paypal.me/hungphan2001"
+WEBSITE_URL="https://sourceforge.net/projects/cherish-os/files/device/"
+NEWS_URL="https:\/\/t.me\/CherishOS"
+JSON_FMT='{\n"error":false,\n"filename": %s,\n"datetime": %s,\n"size":%s, \n"url":"%s", \n"filehash":"%s", \n"version": "%s", \n"id": "%s",\n"donate_url": "%s",\n"website_url":"%s",\n"news_url":"%s",\n"maintainer":"%s",\n"maintainer_url":"%s",\n"forum_url":"%s"\n}'
+printf "$JSON_FMT" "$FILENAME" "$DATETIME" "$SIZE" "$URL" "$FILEHASH" "$VERSION" "$ID" "$DONATE_URL" "$WEBSITE_URL" "$NEWS_URL" "$MAINTAINER" "$MAINTAINER_URL" "$FORUM_URL" > $ROMDIR/OTA/builds/$DEVICE.json
+echo $ROMDIR/OTA/builds/$DEVICE.json file created
+
+BUILD_DATE=$(echo $FILENAME | cut -d "-" -f 3)
+BUILD_YEAR=${BUILD_DATE:0:4}
+BUILD_MONTH=${BUILD_DATE:4:2}
+BUILD_DAY=${BUILD_DATE:6:2}
+CHANGELOG_DATE=$(echo $BUILD_YEAR/$BUILD_MONTH/$BUILD_DAY)
+CHANGELOG="Changelog - %s\n\n"
+printf "$CHANGELOG_DATE" > $ROMDIR/OTA/changelogs/$DEVICE/$FILENAME.txt
+echo $ROMDIR/OTA/changelogs/$DEVICE/$FILENAME.txt file created