Driver/Zig: Add dedicated page

Author: amotl

docs/_assets/icon/zig-logo.png

@@ -113,6 +113,20 @@ CrateDB drivers and adapters for supported programming languages, frameworks, an
 
 ::::
 
+::::{grid-item-card} Zig
+:link: connect-zig
+:link-type: ref
+:link-alt: Connect to CrateDB using Zig
+:padding: 3
+:text-align: center
+:class-card: sd-pt-3
+:class-body: sd-fs-1
+:class-title: sd-fs-6
+```{image} /_assets/icon/zig-logo.png
+:height: 50px
+```
+::::
+
 :::::
 
 
@@ -187,6 +201,7 @@ javascript
 php
 python
 ruby
+zig
 natural
 All drivers <drivers>
 ```

docs/connect/index.md

@@ -0,0 +1,77 @@
+(connect-zig)=
+
+# Zig
+
+:::{div} sd-text-muted
+Connect to CrateDB from Zig applications.
+:::
+
+:::{rubric} About
+:::
+
+[pg.zig] is a native PostgreSQL driver / client for Zig.
+
+:::{rubric} Synopsis
+:::
+
+`build.zig`
+```zig
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    const exe = b.addExecutable(.{
+        .name = "example",
+        .root_module = b.createModule(.{
+            .root_source_file = b.path("example.zig"),
+            .target = b.graph.host,
+        })
+    });
+
+    const pg = b.dependency("pg", .{
+        .target = target,
+        .optimize = optimize,
+    });
+    exe.root_module.addImport("pg", pg.module("pg"));
+
+    b.installArtifact(exe);
+}
+```
+`example.zig`
+```zig
+const std = @import("std");
+const builtin = @import("builtin");
+
+const pg = @import("pg");
+
+pub fn main() !void {
+
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    const allocator = if (builtin.mode == .Debug) gpa.allocator() else std.heap.c_allocator;
+
+    const uri = try std.Uri.parse("postgresql://crate:crate@localhost/doc?sslmode=disable");
+    var pool = try pg.Pool.initUri(allocator, uri, .{.size=5, .timeout=5_000});
+    defer pool.deinit();
+
+    var result = try pool.query("SELECT mountain, height FROM sys.summits ORDER BY height DESC LIMIT 3", .{});
+    defer result.deinit();
+
+    while (try result.next()) |row| {
+        const mountain = row.get([]u8, 0);
+        const height = row.get(i32, 1);
+        std.debug.print("{s}: {d}\n", .{mountain, height});
+    }
+
+}
+```
+```shell
+zig fetch --save git+https://github.com/karlseguin/pg.zig#master
+zig build
+./zig-out/bin/hello
+```
+
+
+[pg.zig]: https://github.com/karlseguin/pg.zig