feat: added editorconfig, markdownlint, pre-commit config, gitignore

.ecrc

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+{
+    "IgnoreDefaults": false,
+    "Exclude": ["^LICENSE$", "^LICENSES/.*"]
+}

.ecrc.license

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+SPDX-FileCopyrightText: 2023 Tobias Schmidl
+
+SPDX-License-Identifier: AGPL-3.0-or-later

.editorconfig

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+# SPDX-FileCopyrightText: 2023 Tobias Schmidl
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = tabs
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{yaml,yml}]
+indent_size = 2
+indent_style = space
+
+[*.{cpp,hpp,h}]
+indent_size = 2
+
+[{CMakeLists.txt,*.cmake}]
+indent_style = tabs
+
+[*.md]
+indent_size = 2

.gitignore

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+# SPDX-FileCopyrightText: 2023 Tobias Schmidl
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+### VisualStudioCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+!.vscode/*.code-snippets
+
+# Local History for Visual Studio Code
+.history/
+
+# Built Visual Studio Code Extensions
+*.vsix
+
+### Vim
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+*~
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~
+/.reuse

.markdownlint.yml

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+# SPDX-FileCopyrightText: 2023 Tobias Schmidl
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+---
+default: true
+MD013: false
+MD033: false
+...

.pre-commit-config.yaml

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+# SPDX-FileCopyrightText: 2023 Tobias Schmidl
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+---
+repos:
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.5.0
+  hooks:
+  - id: check-yaml
+  - id: end-of-file-fixer
+  - id: trailing-whitespace
+  - id: check-merge-conflict
+  - id: check-byte-order-marker
+- repo: https://github.com/fsfe/reuse-tool
+  rev: v2.1.0
+  hooks:
+  - id: reuse
+- repo: https://github.com/editorconfig-checker/editorconfig-checker.python
+  rev: '2.7.3'
+  hooks:
+  - id: editorconfig-checker
+    alias: ec
+    stages: [commit]
+- repo: https://github.com/compilerla/conventional-pre-commit
+  rev: v2.4.0
+  hooks:
+  - id: conventional-pre-commit
+    stages: [commit-msg]
+- repo: https://github.com/igorshubovych/markdownlint-cli
+  rev: v0.37.0
+  hooks:
+  - id: markdownlint
+...