docs(CONTRIBUTING.md): add general guidelines for contributions

Author: NeroReflex

CONTRIBUTING.md

@@ -0,0 +1,86 @@
+# Contributing
+
+Contributing to InputPlumber is done via Pull Requests on the main github repository: [InputPlumber](https://github.com/shadowblip/InputPlumber).
+
+## Commit Titles
+
+This project uses [semantic-release](https://github.com/semantic-release/semantic-release) which uses Angular-style commit messages in order to automatically trigger releases.
+
+You can read more about it [here](https://github.com/angular/angular/blob/main/CONTRIBUTING.md#-commit-message-format).
+
+In short every commit must be in the form of:
+
+- chore(*thing*): Title words
+- fix(*thing*): Title words
+- feat(*thing*): Title words
+- docs(*thing*): Title words
+
+This is a non-exhaustive list, please read the above link to learn more.
+
+## General Rules
+
+Files related to IDEs are not allowed in the repository.
+
+Every commit must go through
+
+```sh
+cargo fmt
+```
+
+so make sure to run it before any new commit.
+
+## Testing and debugging
+
+In order to run the application you have to stop every other running instances and launch as the in-development version as root:
+this can be achieved launching lldb-server as root and connecting to that service to debug InputPlumber.
+
+The command is the following:
+
+```sh
+lldb-server platform --listen "*:1234" --server
+```
+
+if you want to use a systemd service:
+
+```ini
+[Unit]
+Description=lldb debug server
+Wants=network-online.target
+After=network.target network-online.target
+
+[Service]
+ExecStart=lldb-server platform --listen "*:1234" --server
+Restart=always
+WorkingDirectory=/var/lldb-debug-server
+
+[Install]
+WantedBy=multi-user.target
+```
+
+however remember to disable it when you are done and to be on a secure network as no password will be asked and every executable sent
+will be run as root.
+
+A minimal configuration for VSCode with CodeLLDB extension to match the previous command is as follows:
+
+```json
+{
+    
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Remote launch",
+            "type": "lldb",
+            "request": "launch",
+            "program": "${workspaceFolder}/target/debug/inputplumber",
+            "initCommands": [
+                "platform select remote-linux",
+                "platform connect connect://192.168.1.19:1234",
+                "settings set target.inherit-env false"
+            ],
+            "env": {
+                "PATH": "/usr/bin:/usr/local/sbin:/usr/local/bin:/var/lib/flatpak/exports/bin:/usr/lib/rustup/bin"
+            }
+        }
+    ]
+}
+```