add TSamLast command for reexecuting last running tests

lua/test-samurai/core.lua

@@ -7,6 +7,7 @@ local state = {
   runners = {},
   last_win = nil,
   last_buf = nil,
+  last_command = nil,
   autocmds_set = false,
 }
 
@@ -50,6 +51,7 @@ end
 function M.setup()
   load_runners()
   ensure_output_autocmds()
+  state.last_command = nil
 end
 
 function M.reload_runners()
@@ -298,6 +300,12 @@ local function run_cmd(cmd, cwd, handlers)
 end
 
 local function run_command(command)
+  if command and type(command.cmd) == "table" and #command.cmd > 0 then
+    state.last_command = {
+      cmd = vim.deepcopy(command.cmd),
+      cwd = command.cwd,
+    }
+  end
   local cmd = command.cmd
   local cwd = command.cwd or vim.loop.cwd()
 
@@ -350,6 +358,19 @@ local function run_command(command)
   })
 end
 
+function M.run_last()
+  if not (state.last_command and type(state.last_command.cmd) == "table") then
+    vim.notify("[test-samurai] No previous test command", vim.log.levels.WARN)
+    return
+  end
+
+  local command = {
+    cmd = vim.deepcopy(state.last_command.cmd),
+    cwd = state.last_command.cwd,
+  }
+  run_command(command)
+end
+
 function M.run_nearest()
   local bufnr = vim.api.nvim_get_current_buf()
   local pos = vim.api.nvim_win_get_cursor(0)