createFramebuffer should return p5.Framebuffer type instead of void

[andrew-goldie]

(See rendering.d.ts, global.d.ts, p5.Graphics.d.ts)

The function

createFramebuffer(options?: object): void;

should be defined as

createFramebuffer(options?: object): p5.Framebuffer;

See here for p5.js documentation: https://p5js.org/reference/#/p5.Graphics and https://p5js.org/reference/#/p5.Graphics/createFramebuffer

[asukaminato0721]

currently it's recommended to generate type by self

In p5js 2.0, upstream will release the type file, so I am not maintaining this repo now.

grep "createFramebuffer" -r . --exclude "*.json"
./types/p5/global.d.ts:     *   Note: createFramebuffer() can only be used in
./types/p5/global.d.ts:    function createFramebuffer(options?: object): p5.Framebuffer;
./types/p5/src/webgl/p5.Shader.d.ts:         *   createFramebuffer(). Both objects have the same
./types/p5/src/webgl/p5.Framebuffer.d.ts:         *   Note: createFramebuffer() is the recommended way
./types/p5/src/core/p5.Graphics.d.ts:        createFramebuffer(options?: object): Framebuffer;
./types/p5/src/core/rendering.d.ts:         *   Note: createFramebuffer() can only be used in
./types/p5/src/core/rendering.d.ts:        createFramebuffer(options?: object): Framebuffer;
./node_modules/typescript/lib/lib.dom.d.ts:    createFramebuffer(): WebGLFramebuffer | null;
./node_modules/typescript/lib/lib.webworker.d.ts:    createFramebuffer(): WebGLFramebuffer | null;