feat: add distributed-builds & many hosts

feat: remove nur & devenv
feat: adjust the structure to make it suitable for servers
feat: add iso/proxmox generators and add docs about it
feat: update ryan's openssh keys & add hashedPassword
feat: add proxmox's nodes into ssh_config, with alias

home/base/server/git.nix

@@ -0,0 +1,77 @@
+{ config
+, lib
+, pkgs
+, ...
+}: {
+  # `programs.git` will generate the config file: ~/.config/git/config
+  # to make git use this config file, `~/.gitconfig` should not exist!
+  #
+  #    https://git-scm.com/docs/git-config#Documentation/git-config.txt---global
+  home.activation.removeExistingGitconfig = lib.hm.dag.entryBefore [ "checkLinkTargets" ] ''
+    rm -f ~/.gitconfig
+  '';
+
+  programs.git = {
+    enable = true;
+    lfs.enable = true;
+
+    userName = "Ryan Yin";
+    userEmail = "xiaoyin_c@qq.com";
+
+    includes = [
+      {
+        # use diffrent email & name for work
+        path = "~/work/.gitconfig";
+        condition = "gitdir:~/work/";
+      }
+    ];
+
+    extraConfig = {
+      init.defaultBranch = "main";
+      push.autoSetupRemote = true;
+      pull.rebase = true;
+
+      # replace https with ssh
+      url = {
+        "ssh://git@github.com/" = {
+          insteadOf = "https://github.com/";
+        };
+        "ssh://git@gitlab.com/" = {
+          insteadOf = "https://gitlab.com/";
+        };
+        "ssh://git@bitbucket.com/" = {
+          insteadOf = "https://bitbucket.com/";
+        };
+      };
+    };
+
+    # signing = {
+    #   key = "xxx";
+    #   signByDefault = true;
+    # };
+
+    delta = {
+      enable = true;
+      options = {
+        features = "side-by-side";
+      };
+    };
+
+    aliases = {
+      # common aliases
+      br = "branch";
+      co = "checkout";
+      st = "status";
+      ls = "log --pretty=format:\"%C(yellow)%h%Cred%d\\\\ %Creset%s%Cblue\\\\ [%cn]\" --decorate";
+      ll = "log --pretty=format:\"%C(yellow)%h%Cred%d\\\\ %Creset%s%Cblue\\\\ [%cn]\" --decorate --numstat";
+      cm = "commit -m";
+      ca = "commit -am";
+      dc = "diff --cached";
+      amend = "commit --amend -m";
+
+      # aliases for submodule
+      update = "submodule update --init --recursive";
+      foreach = "submodule foreach";
+    };
+  };
+}