feat: update Soldat protocol (#642)

* feat: add Soldat support

* feat: update protocol in games.js and CHANGELOG

* feat: add gamemode in the raw object

* remove debug console log

* misspell

* docs: add server config requirements

* fix games list formatting issue

* fix: players list

protocols/soldat.js

@@ -0,0 +1,45 @@
+import Core from './core.js'
+
+const extractValue = (text, regex, defaultValue, parser = (val) => val) => {
+  const match = text.match(regex)
+  return match ? parser(match[1] || defaultValue) : defaultValue
+}
+
+export default class soldat extends Core {
+  async run (state) {
+    const data = await this.withTcp(async socket => {
+      return await this.tcpSend(socket, 'STARTFILES\r\nlogs/gamestat.txt\r\nENDFILES\r\n', (data) => {
+        const asString = data.toString()
+        if (asString.endsWith('\r\n') && !asString.endsWith('ENDFILES\r\n')) {
+          return undefined
+        }
+        return data
+      })
+    })
+
+    const string = data.toString()
+
+    state.numplayers = extractValue(string, /Players:\s*(\d+)/, 0, Number)
+    state.map = extractValue(string, /Map:\s*(.+)/, '')
+
+    const lines = string.trim().split('\n')
+    const playersIndex = lines.findIndex(line => line.startsWith('Players list'))
+
+    if (playersIndex > -1) {
+      for (let i = playersIndex + 1; i < lines.length - 1; i += 5) {
+        state.players.push({
+          name: lines[i].trim(),
+          raw: {
+            kills: parseInt(lines[i + 1].trim()),
+            deaths: parseInt(lines[i + 2].trim()),
+            team: parseInt(lines[i + 3].trim()),
+            ping: parseInt(lines[i + 4].trim())
+          }
+        })
+      }
+    }
+
+    state.raw.response = string
+    state.raw.gamemode = extractValue(string, /Gamemode:\s*(.+)/, '')
+  }
+}