Added tokyo night (moon variant) and added more variance to tokyo night themes. (#774)

themes/palettes/tokyo_night.json

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+{
+    "bg": "#1a1b26",
+    "bg_dark": "#16161e",
+    "bg_dark1": "#0C0E14",
+    "bg_highlight": "#292e42",
+    "blue": "#7aa2f7",
+    "blue0": "#3d59a1",
+    "blue1": "#2ac3de",
+    "blue2": "#0db9d7",
+    "blue5": "#89ddff",
+    "blue6": "#b4f9f8",
+    "blue7": "#394b70",
+    "comment": "#565f89",
+    "cyan": "#7dcfff",
+    "dark3": "#545c7e",
+    "dark5": "#737aa2",
+    "fg": "#c0caf5",
+    "fg_dark": "#a9b1d6",
+    "fg_gutter": "#3b4261",
+    "green": "#9ece6a",
+    "green1": "#73daca",
+    "green2": "#41a6b5",
+    "magenta": "#bb9af7",
+    "magenta2": "#ff007c",
+    "orange": "#ff9e64",
+    "purple": "#9d7cd8",
+    "red": "#f7768e",
+    "red1": "#db4b4b",
+    "teal": "#1abc9c",
+    "terminal_black": "#414868",
+    "yellow": "#e0af68",
+    "git": {
+        "add": "#449dab",
+        "change": "#6183bb",
+        "delete": "#914c54"
+    }
+}

themes/palettes/tokyo_night_moon.json

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+{
+    "bg": "#222436",
+    "bg_dark": "#1e2030",
+    "bg_dark1": "#191B29",
+    "bg_highlight": "#2f334d",
+    "blue": "#82aaff",
+    "blue0": "#3e68d7",
+    "blue1": "#65bcff",
+    "blue2": "#0db9d7",
+    "blue5": "#89ddff",
+    "blue6": "#b4f9f8",
+    "blue7": "#394b70",
+    "comment": "#636da6",
+    "cyan": "#86e1fc",
+    "dark3": "#545c7e",
+    "dark5": "#737aa2",
+    "fg": "#c8d3f5",
+    "fg_dark": "#828bb8",
+    "fg_gutter": "#3b4261",
+    "green": "#c3e88d",
+    "green1": "#4fd6be",
+    "green2": "#41a6b5",
+    "magenta": "#c099ff",
+    "magenta2": "#ff007c",
+    "orange": "#ff966c",
+    "purple": "#fca7ea",
+    "red": "#ff757f",
+    "red1": "#c53b53",
+    "teal": "#4fd6be",
+    "terminal_black": "#444a73",
+    "yellow": "#ffc777",
+    "git": {
+        "add": "#b8db87",
+        "change": "#7ca1f2",
+        "delete": "#e26a75"
+    }
+}