Add Git style and strengthen Hawolex

- Add git preset with repo capsule

- Boost Hawolex palette contrast

- Update context and contest JSONs

.context.json

@@ -161,10 +161,17 @@
         "description": "Clean monochrome, fast read, low noise.",
         "layout": "two-line, minimal",
         "preview": "[date time user] @host /path"
+      },
+      {
+        "id": "git",
+        "name": "Git",
+        "description": "Minimal blocks with git capsule when in repo.",
+        "layout": "two-line, git capsule on line 2",
+        "preview": "[date time user] @host - /path (git)"
       }
     ],
     "config": {
-      "env": "PS1_STYLE=aurora|neon|forge|circuit|mono; PS1_STYLE_PACK=standard|contest|holiday; PS1_CONTEST_LAYOUT=day-time-user|user-time|time-user|day-time; PS1_HOLIDAY=christmas|easter|halloween|valentine|thanksgiving|newyear|hawolex",
+      "env": "PS1_STYLE=aurora|neon|forge|circuit|mono|git; PS1_STYLE_PACK=standard|contest|holiday; PS1_CONTEST_LAYOUT=day-time-user|user-time|time-user|day-time; PS1_HOLIDAY=christmas|easter|halloween|valentine|thanksgiving|newyear|hawolex",
       "config_file_keys": [
         "PS1_STYLE",
         "PS1_STYLE_PACK",