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Change interlace_detect to a bool when using hardcoded settings

Fixes a compliation error that occurs if `RUNTIME_SHADER_PARAMS_ENABLE' is turned off. The inline function `is_interlaced' in the file `src/scanline-functions.h' expects `interlace_detect' to be a bool, not a float.

* add a couple more stereoscopic 3D shaders

* missed one for some reason

update bob-deinterlacing and remove now-redundant bob-and-ghost

SMAA: Fix color edge detection

Fix incorrect calculation of local contrast adaption in color edge detection

This is the fix from PR iryoku/smaa#11

add technicolor shader

SMAA and FSR: The 2nd Runner

- New implementation of Film Grain that doesn't suck, so we can turn it up a nod by default. Supports RGB noise and shaping the distribution curve to control noise modulation. The previous implementation was just a placeholder, it was very basic.
- Greatly increased Anti-Aliasing quality in default preset.
- Include license headers to make clear that all my contributions are released on the public domain under the terms of the Unlicense. Anyone can do whatever they want with this.

- Expose all the configuration settings used by the quality presets to allow fine-tuning of edge detection.
- Changed default edge detection technique from luma to color since in my tests that always yields better results.
- Increased quality to ultra in default preset.
- Deleted the duplication of the fragment shader part of the lib, as I figured out how to include the lib twice with different defines for the vertex and fragment passes. That is necessary probably because discard cannot be used in vertex shaders in RetroArch, indicated in a comment in the lib as a possible restriction in some compilers.
- Include license headers to make clear that all my contributions are released on the public domain under the terms of the Unlicense. Anyone can do whatever they want with this.

move integer-scaling-scanlines to match other directories; create pre…

move integer-scaling-scanlines to match other directories; create presets for other scanline shaders

Add integer scaling mode pixel perfect scanline shader

Add AMD FSR and remade SMAA

Adds a new port of SMAA. This includes the original sources unmodified. The original does a great job of ensuring compatibility with any shader compiler, so no need to modify it.

- Add a runtime toggle to choose edge detection technique;
- Position independent, doesn't need to be the first shader in a chain anymore.

fix zfast_crt for rotated games

update crt-geom-ntsc presets

update ntsc-tate and some ntsc presets

* update crt-guest, add advanced

* re-add some prematurely deleted GDV passes

* fix ntsc res behavior

* disable field-merging on 2-phase to allow MD rainbow artifacting

* remove unused function

ntsc-adaptive adreno optimisation

parameterize raw palette support for pal-r57shell and add a copy to t…

parameterize ntsc-tate as ntsc-adaptive was

fix some presets parameters

* add updated NDS color, Super Sleuth gamma ramp and more trogglemonkey blurs

* whoops, remove debug workaround

* remove reference to Cg shaders

* make ntsc-adaptive more custom, add RF preset, move some ntsc presets to 'presets'

* add updated NDS color, Super Sleuth gamma ramp and more trogglemonkey blurs

crt-geom: add vertical mode, ntsc-adaptive-tate, smart-morph updates