Reorganise and rename the CGA files. Move onboard video to the video folder. Rename "con" to "cursorvisible" across the entire emulator

src/include/86box/m_pcjr.h

@@ -0,0 +1,72 @@
+/*
+ * 86Box    A hypervisor and IBM PC system emulator that specializes in
+ *          running old operating systems and software designed for IBM
+ *          PC systems and compatibles from 1981 through fairly recent
+ *          system designs based on the PCI bus.
+ *
+ *          This file is part of the 86Box distribution.
+ *
+ *          Header files for the PCjr keyboard and video subsystems.
+ *
+ *
+ *
+ * Authors: Connor Hyde, <mario64crashed@gmail.com>
+ *
+ *          Copyright 2025 starfrost
+ */
+
+#pragma once
+
+#define PCJR_RGB       0
+#define PCJR_COMPOSITE 1
+
+typedef struct pcjr_s 
+{
+    /* Video Controller stuff. */
+    mem_mapping_t mapping;
+    uint8_t       crtc[32];
+    int           crtcreg;
+    int           array_index;
+    uint8_t       array[32];
+    int           array_ff;
+    int           memctrl;
+    uint8_t       stat;
+    int           addr_mode;
+    uint8_t      *vram;
+    uint8_t      *b8000;
+    int           linepos;
+    int           displine;
+    int           sc;
+    int           vc;
+    int           dispon;
+    int           cursorvisible;            // Is the cursor visible on the current scanline?
+    int           cursoron;
+    int           blink;
+    int           vsynctime;
+    int           fullchange;
+    int           vadj;
+    uint16_t      ma;
+    uint16_t      maback;
+    uint64_t      dispontime;
+    uint64_t      dispofftime;
+    pc_timer_t    timer;
+    int           firstline;
+    int           lastline;
+    int           composite;
+    int           apply_hd;
+
+        /* Keyboard Controller stuff. */
+    int        latched;
+    int        data;
+    int        serial_data[44];
+    int        serial_pos;
+    uint8_t    pa;
+    uint8_t    pb;
+    pc_timer_t send_delay_timer;
+
+} pcjr_t; 
+
+void pcjr_recalc_timings(pcjr_t *pcjr);
+
+// Note: This is a temporary solution until the pcjr video is made its own gfx card
+void pcjr_vid_init(pcjr_t *pcjr);