feat: Title Server Encryption (#216)

i still have a few things i'd like to do but i want to get this merged in and deployed asap

docs/encryption.md

@@ -0,0 +1,35 @@
+# Encryption Support
+
+AquaDX supports encryption for Chunithm, Maimai and Ongeki.<br>
+It is not required to connect and keys are NOT provided by default.
+
+Card Maker has encryption features in the client, but they are not supported due to it's complexity.
+
+## Adding new keys to AquaDX
+
+> [!IMPORTANT]
+> Ensure you're using AquaDX from source. Docker will work, as long as you use `docker-compose up --build`
+
+1. Create a new file at `src/main/resources/data/game/<game name>/game_encryption.json`
+2. Fill it out using the following schema:
+```json
+{
+    "code": "SDHD",
+    "versions": [215, 216],
+    "key": "DECAFBADDECAFBADDECAFBADDECAFBADDECAFBADDECAFBADDECAFBADDECAFBAD",
+    "iv": "DECAFBADDECAFBADDECAFBADDECAFBAD",
+    "salt": "DECAFBADDECAFBAD",
+    "iterations": 36
+},
+```
+
+**`key`, `salt`, and `iv` MUST be hex strings. Do NOT insert raw ASCII strings.**<br>
+
+Replace `code` with the correct code for your game (`SDHD` for Chunithm JP, `SDEZ` for Maimai JP, etc.).<br>
+Set `versions` to be an array of game versions without the decimal (215 for 2.15, 150 for 1.50, etc.).<br> 
+You MUST include rom patch versions in this array or it will not encrypt correctly.
+
+- Maimai DX does NOT use iterations, you do not need to include it
+- Ongeki always uses 64 iterations (you must include it)
+- If using a specific Python script to rip Chunithm keys, focus on the `=>` entries.
+- `key` is 32 bytes long. `iv` is 16 bytes long. `salt` is 8 bytes long. (hex strings should be twice as long as they are in bytes)