Add Trident MKS Monster 8 V1.0 in SPI mode; This PR will not work properly without PR #261

[GadgetAngel]

*Add Trident MKS Monster 8 V1.0 in SPI mode, This PR will not work properly without PR #261 . It contains a link to the information in PR #261

*In Community/Electronics/ added the following:

1. GadgetAngel folder
2. images subfolder

*updated Index.md file in Community/Electronics/ to add "Trident - MKS Monster 8 V1.0 Wiring for both SPI and UART modes" (tri_monster8_wiring.md) *tri_monster8_wiring.md is a parent to tri_monster8_spi_wiring.md

*reused two additional files: a. monster8_RaspberryPi.md b. monster8_Resources.md

*added initial Removal of Jumpers diagram *added initial preparation - Set Jumpers diagram for MKS Monster 8 V1.0 in SPI mode *added description for Trident wiring diagram in MKS Monster 8 V1.0 in SPI mode *added the heatsink diagram to remind user to ensure that the heatsinks are installed on the stepper motor drivers for: *Added the following MCU with heat sinks in SPI mode *added URL to the Klipper Configuration by RealDeuce (https://raw.githubusercontent.com/VoronDesign/VoronUsers/master/firmware_configurations/klipper/RealDeuce/MKS-Makerbase/Monster8_v1.0_003/Voron2_Monster8_Config.cfg) for MKS Monster 8 V1.0 *informed user that the above config file by RealDeuce needs to be changed from UART to SPI and from Voron 2.4 to Trident *added links to other resources