Add mermaid JS renderer (#12334)

* Add mermaid JS renderer

For feature parity with GitLab. Tested in files, issues, wiki, editor.
arc-green only does an inversion because the renderer seems to like to
render white backgrounds on boxes.

Ref: https://github.com/go-gitea/gitea/issues/3340
Fixes: https://github.com/go-gitea/gitea/issues/12307

* add feature entry, switch to neutral theme, remove border

* add bindFunctions support

* remove unnecessary border-radius

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

1 files changed, 462 insertions, 2 deletions

diff --git a/package-lock.json b/package-lock.json
index 5754c9fc54..b0bc6fc22f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2492,6 +2492,15 @@
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       "integrity": "sha1-BuuE8A7qQT2oav/vrL/7Ngk7PFA="
     },
+    "camel-case": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/camel-case/-/camel-case-3.0.0.tgz",
+      "integrity": "sha1-yjw2iKTpzzpM2nd9xNy8cTJJz3M=",
+      "requires": {
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+        "upper-case": "^1.1.1"
+      }
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     "camelcase": {
       "version": "5.3.1",
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
@@ -3219,6 +3228,14 @@
         "randomfill": "^1.0.3"
       }
     },
+    "crypto-random-string": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/crypto-random-string/-/crypto-random-string-3.2.0.tgz",
+      "integrity": "sha512-8vPu5bsKaq2uKRy3OL7h1Oo7RayAWB8sYexLKAqvCXVib8SxgbmoF1IN4QMKjBv8uI8mp5gPPMbiRah25GMrVQ==",
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     "css": {
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       "resolved": "https://registry.npmjs.org/css/-/css-2.2.4.tgz",
@@ -3237,6 +3254,11 @@
         }
       }
     },
+    "css-b64-images": {
+      "version": "0.2.5",
+      "resolved": "https://registry.npmjs.org/css-b64-images/-/css-b64-images-0.2.5.tgz",
+      "integrity": "sha1-QgBdgyBLK0pdk7axpWRBM7WSegI="
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     "css-blank-pseudo": {
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       "resolved": "https://registry.npmjs.org/css-blank-pseudo/-/css-blank-pseudo-0.1.4.tgz",
@@ -3501,6 +3523,290 @@
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+        "d3-brush": "1",
+        "d3-chord": "1",
+        "d3-collection": "1",
+        "d3-color": "1",
+        "d3-contour": "1",
+        "d3-dispatch": "1",
+        "d3-drag": "1",
+        "d3-dsv": "1",
+        "d3-ease": "1",
+        "d3-fetch": "1",
+        "d3-force": "1",
+        "d3-format": "1",
+        "d3-geo": "1",
+        "d3-hierarchy": "1",
+        "d3-interpolate": "1",
+        "d3-path": "1",
+        "d3-polygon": "1",
+        "d3-quadtree": "1",
+        "d3-random": "1",
+        "d3-scale": "2",
+        "d3-scale-chromatic": "1",
+        "d3-selection": "1",
+        "d3-shape": "1",
+        "d3-time": "1",
+        "d3-time-format": "2",
+        "d3-timer": "1",
+        "d3-transition": "1",
+        "d3-voronoi": "1",
+        "d3-zoom": "1"
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