Add tests

.gitignore

files/bash/run_jars.sh

files/bash/send_jars.sh

files/config.txt

files/configTest.txt

files/generated_log/test.log

files/known_log_lines.log

out/artifacts/grep_server_jar/grep.jar

pom.xml

src/main/java/META-INF/MANIFEST.MF

src/main/java/cs425/mp1/Client.java

src/main/java/cs425/mp1/ClientHandler.java

src/main/java/cs425/mp1/Constant.java

src/main/java/cs425/mp1/GenLog.java

src/main/java/cs425/mp1/JobThread.java

src/main/java/cs425/mp1/Server.java

src/test/java/GrepTest.java

target/classes/cs425/mp1/Client.class

target/classes/cs425/mp1/ClientHandler.class

target/classes/cs425/mp1/Constant.class