Migrate from Gradle to Maven

.gitignore

@@ -4,12 +4,14 @@
 /.gradle/
 /.settings/
 
-/ltexls/bin/
-/ltexls/build/
+/ltexls-core/.classpath
+/ltexls-core/.project
+
+/ltexls-core/.settings/
+/ltexls-core/target/
 
 /ltexls-languagetool-patch/.classpath
 /ltexls-languagetool-patch/.project
 
 /ltexls-languagetool-patch/.settings/
-/ltexls-languagetool-patch/bin/
-/ltexls-languagetool-patch/build/
+/ltexls-languagetool-patch/target/

.travis.yml

@@ -12,30 +12,31 @@ jobs:
     - stage: "test"
       os: "linux"
       script:
-        - "./gradlew build"
+        - "mvn verify -e"
     - stage: "test"
       os: "osx"
       jdk: "openjdk11"
       script:
-        - "./gradlew build"
+        - "mvn verify -e"
     - stage: "test"
       os: "windows"
       language: "shell"
       install:
         - "choco install openjdk11"
+        - "choco install maven"
       script:
-        - "cmd.exe //C \"RefreshEnv.cmd & gradlew.bat build & gradlew.bat --stop\""
+        - "cmd.exe //C \"RefreshEnv.cmd & mvn verify -e\""
     - stage: "coverage"
       script:
-        - "./gradlew build jacocoTestReport coveralls"
+        - "mvn verify -e org.jacoco:jacoco-maven-plugin:report org.eluder.coveralls:coveralls-maven-plugin:report"
     - stage: "deploy"
       if: "tag IS present"
       install:
         - "sudo apt-get -y install python3-pip"
         - "pip3 install semver"
       script:
-        - "./gradlew installDist distTar"
-        - "build/install/ltex-ls/bin/ltex-ls --version > ltexLsVersion.json"
+        - "mvn package -e"
+        - "ltexls-core/target/appassembler/bin/ltex-ls --version > ltexLsVersion.json"
         - "export LTEX_LS_VERSION=\"$(python3 -c \"import json; print(json.load(open('ltexLsVersion.json'))['ltex-ls'], end='')\")\""
         - "rm ltexLsVersion.json"
         - "if [[ -z \"$LTEX_LS_VERSION\" ]]; then echo 'Error: LTEX_LS_VERSION not set!'; (exit 1); fi"
@@ -47,7 +48,7 @@ jobs:
           provider: "releases"
           token:
             secure: "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"
-          file: "build/distributions/ltex-ls-*.tar.gz"
+          file: "ltexls-core/target/ltex-ls-*.tar.gz"
           file_glob: true
           # needs to be removed for Travis's dpl v2
           # see https://blog.travis-ci.com/2019-08-27-deployment-tooling-dpl-v2-preview-release#cleaning-up-the-git-working-directory