feat: session encryption

-- Allows user-customization of encryption

encryption.lua

@@ -0,0 +1,43 @@
+--          ╭─────────────────────────────────────────────────────────╮
+--          │                       ENCRYPTION                        │
+--          ╰─────────────────────────────────────────────────────────╯
+
+local M = {}
+
+-- Set the keyfile
+local key = WEZTERM.home_dir .. "/.config/.private/key.txt"
+local pubkey = "age1q80h5jsp9d48kggf9kra82xkgyaqdnehqenm003ftapem9re7ytqp9hr6h"
+
+if MYKEY then
+	key = MYKEY
+elseif MYOS == "win" then
+	key = WEZTERM.home_dir .. "\\.config\\.private\\key.txt"
+end
+
+if MYPUBKEY then
+	pubkey = MYPUBKEY
+else
+end
+
+---@function Check if a file exists
+---@param file string The file path to check
+---@return boolean exists True if the file exists, false otherwise
+local function file_exists(file)
+	local f = io.open(file, "r")
+	if f then
+		f:close()
+		return true
+	end
+	return false
+end
+
+if file_exists(key) then
+	RESURRECT.set_encryption({
+		enable = true,
+		method = "age", -- "age" is the default encryption method, but you can also specify "rage" or "gpg"
+		private_key = key, -- if using "gpg", you can omit this
+		public_key = pubkey,
+	})
+end
+
+return M