Started adding sqlite3 stuff

SQLite.zig

@@ -0,0 +1,54 @@
+const std = @import("std");
+const c = @cImport({
+    @cInclude("sqlite3.h");
+});
+
+const ZBoardDB = struct {
+    db: *c.sqlite3,
+
+    fn init() !ZBoardDB {
+        var db: ?*c.sqlite3 = undefined;
+        if (c.SQLITE_OK != c.sqlite3_open(":memory:", &db)) {
+            std.debug.print("Could not open SQLite3 DB");
+            return error.execError;
+        }
+
+        var zboard_db: ZBoardDB = .{ .db = db };
+        try zboard_db.execute(
+            \\ CREATE TABLE IF NOT EXISTS users (
+            \\     id INTEGER PRIMARY KEY,
+            \\     username VARCHAR(255) NOT NULL UNIQUE
+            \\ );
+            \\ CREATE TABLE IF NOT EXISTS topics (
+            \\     id INTEGER PRIMARY KEY,
+            \\     topic VARCHAR(255) NOT NULL UNIQUE
+            \\ );
+            \\ CREATE TABLE IF NOT EXISTS threads (
+            \\     id INTEGER PRIMARY KEY,
+            \\     title VARCHAR(255) NOT NULL UNIQUE,
+            \\     topic INTEGER NOT NULL
+            \\ );
+            \\ CREATE TABLE IF NOT EXISTS posts (
+            \\     id INTEGER PRIMARY KEY,
+            \\     user_id INTEGER NOT NULL,
+            \\     post TEXT NOT NULL,
+            \\     thread INTEGER NOT NULL,
+            \\     datetime INTEGER NOT NULL
+            \\ );
+        );
+    }
+
+    fn deinit(self: ZBoardDB) void {
+        _ = c.sqlite3_close(self.db);
+    }
+
+    fn execute(self: ZBoardDB, query: [:0]const u8) !void {
+        var errmsg: [*c]u8 = undefined;
+        if (c.SQLITE_OK != c.sqlite3_exec(self.db, query, null, null, &errmsg)) {
+            defer c.sqlite3_free(errmsg);
+            std.debug.print("Failed to execute SQLite3 queury: {s}\n", .{errmsg});
+            return error.execError;
+        }
+        return;
+    }
+};

build.zig

@@ -25,6 +25,8 @@ pub fn build(b: *std.Build) void {
     // Add Vaxis - tui library
     const vaxis = b.dependency("vaxis", .{ .target = target, .optimize = optimize });
     exe.root_module.addImport("vaxis", vaxis.module("vaxis"));
+    exe.linkSystemLibrary("c");
+    exe.linkSystemLibrary("sqlite3");
 
     // This declares intent for the executable to be installed into the
     // standard location when the user invokes the "install" step (the default