chore: add workflow, configurations

Author: line-o

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto

.github/CONTRIBUTING.md

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+# Contributing
+
+:balloon: First off, thank you for considering contributing to xbow. :balloon: 
+
+All pull-requests are welcome. File a bug report, fix a typo, improve the documentation, or add a new feature. All are helpful, and make xbow better.
+
+Please have a quick look at these guidelines to help both you and the developers to keep things moving smoothly.
+
+## Basic Conduct
+
+*   Please be respectful when discussing changes and issues. Consider that not everyone's first language is english.
+*   Create an issue for any major changes and enhancements that you wish to make.
+
+If this is your first time contributing to a project you might want to take a look [here](https://egghead.io/courses/how-to-contribute-to-an-open-source-project-on-github).
+
+
+## Getting started
+1.  Create your own fork of the code.
+2.  Do the changes in your fork.
+    *   Minor changes that don't impact code functionality (typos, inline comments, ... ) can be done in the master branch.
+    *   Functional changes should be collected in their own branch.
+3.  If you like the change and think the project could use it:
+    *   Open a pull request referencing the issue describing the new feature in the comment section \([how-to](https://github.com/blog/1506-closing-issues-via-pull-requests)\).  
+
+Once your pull request has been reviewed it will be merged. You can greatly help the reviewer by:
+*   sticking to one feature per pull request.
+*   use [meaningful](https://chris.beams.io/posts/git-commit/) commit messages inside your feature branch.
+*   filling out the pull request & issue templates.

.github/ISSUE_TEMPLATE.md

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+### Expected behavior
+
+### Actual behavior
+
+### Reproduction steps
+
+### Please provide the following
+*   Java Version:
+*   exist-db version:
+*   xbow version:
+*   OS version: 

.github/PULL_REQUEST_TEMPLATE.md

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+Fixes #
+---
+-   [ ] includes changes to documentation / readme
+-   [ ] did you already increase version number according to [sem-ver](http://semver.org)?

.github/workflows/semantic-release.yml

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+# This workflow will do a clean install of node dependencies, build the source code and run tests across different versions of existdb
+
+name: Test and Release
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+       matrix:
+         exist-version: [latest, release, 5.0.0]
+    services:
+      # Label used to access the service container
+      exist:
+        image: existdb/existdb:${{ matrix.exist-version}}
+        ports:
+          - 8080:8080
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js 14
+        uses: actions/setup-node@v1
+        with:
+          node-version: 14
+      - run: npm ci
+      - run: npm start
+      - run: npm test
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    needs: build
+    if: github.ref == 'refs/heads/main'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Setup Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: 14
+      - name: Install dependencies
+        run: npm ci
+      - name: Release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npx semantic-release

.releaserc

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+{
+  "plugins": [
+    "@semantic-release/commit-analyzer",
+    "@semantic-release/release-notes-generator",
+    ["@semantic-release/exec", {
+      "prepareCmd": "npm version ${nextRelease.version} --no-git-tag-version --allow-same-version",
+      "publishCmd": "npm run build"
+    }],
+    ["@semantic-release/git", {
+      "assets": ["package.json"],
+      "message": "chore(release): ${nextRelease.version} [skip ci]\n\n${nextRelease.notes}"
+    }],
+    ["@semantic-release/github", {
+      "assets": [
+        {
+          "path": "./xbow-*.xar", 
+          "name": "xbow-${nextRelease.version}.xar",
+          "label": "Expath package (xbow-${nextRelease.version}.xar)"
+        }
+      ]
+    }]
+  ]
+}