build: support pkg managers installation (#87)

closes #71, #84, #86
- AUR
- Homebrew
- Nix
- Debian (.deb)
- RPM (.rpm)
- Aqua
- ASDF

This is my first time doing this, so there might be mistakes. If you
can't download it through any pkg manager, please leave a comment or
open an issue

---------

Co-authored-by: use-the-fork <23747916+use-the-fork@users.noreply.github.com>

hk.pkl

@@ -0,0 +1,41 @@
+amends "package://github.com/jdx/hk/releases/download/v1.50.0/hk@1.50.0#/Config.pkl"
+
+import "package://github.com/jdx/hk/releases/download/v1.50.0/hk@1.50.0#/Builtins.pkl"
+
+local linters = new {
+  ["pkl"] = Builtins.pkl
+}
+
+local formatter = new {
+  ["newlines"] = Builtins.newlines
+  ["fix-smart-quotes"] = Builtins.fix_smart_quotes
+  ["alejandra"] = (Builtins.alejandra) {
+    exclude = List("**/npins/default.nix")
+  }
+  ["pkl-format"] = Builtins.pkl_format
+  ["just-format"] = Builtins.just_format
+}
+
+hooks {
+  ["pre-commit"] {
+    fix = true
+    stash = "git"
+    steps {
+      ...linters
+      ...formatter
+    }
+  }
+  ["fix"] {
+    fix = true
+    steps {
+      ...linters
+      ...formatter
+    }
+  }
+  ["check"] {
+    steps {
+      ...linters
+      ...formatter
+    }
+  }
+}