feat: Add Insight debugger

Author: hstsethi

readme.md

@@ -28,6 +28,7 @@ platform.
 - [bcc - Bruce's Compiler](https://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/distributions/1.2/repos/pkg-html/bcc.html) - Bruce's C compiler is a simple C compiler that produces 8086 assembler for tiny/small memory models.
 - [DJGPP](http://www.delorie.com/djgpp/) - DJ Delorie's complete 32-bit C/C++ development environment for Intel 80386. Used for Quake.
 - [GCC IA-16 toolchain](https://gitlab.com/tkchia/build-ia16/-/releases) - A 16-bit counterpart to DJGPP, a GCC-based toolchain for developing 16-bit (8086 to 80286, a.k.a. IA-16) DOS applications, currently maintained by TK Chia.
+- [Insight](https://www.bttr-software.de/products/insight/) - Very small debugger for real-mode DOS programs with Borland's Turbo like UI. Features an i80486 disassembler, and i8086 assembler.
 - [Open Watcom](https://web.archive.org/web/20220627162043/http://www.openwatcom.org/) - Formerly commercial C/C++ development environment for 16- and 32-bit DOS and
   Windows. The current official version is 1.9. A GitHub fork is also available. Used for Doom I-II, Warcraft I-II, Duke Nukem 3D, Full Throttle, Dark Forces and Retro City Rampage.
   - The [documentation](https://web.archive.org/web/20220630162351/http://www.openwatcom.org/doc.php) is very valuable in order to understand working with both version 1.9 and the V2 fork.