copy: replace Bun with bun (#99)

Most CLI tools have the style convention of referring to themselves in
lowercase. It is, after all, the name that users type in when using
the tool. This PR maintains that convention in bun.

"Drop the uppercase B, it's cleaner"

.vscode/launch.json

@@ -238,7 +238,7 @@
     {
       "type": "lldb",
       "request": "launch",
-      "name": "Bun",
+      "name": "bun",
       "program": "bun-debug",
       "args": ["bun", "--use=next"],
       "cwd": "/Users/jarred/Build/lattice/apps/dazzle",
@@ -327,7 +327,7 @@
     {
       "type": "lldb",
       "request": "launch",
-      "name": "Context Bun Bug",
+      "name": "Context bun Bug",
       "program": "bun-debug",
       "args": ["bun", "./code.js"],
       "cwd": "/Users/jarred/Build/context/www",
@@ -336,7 +336,7 @@
     {
       "type": "lldb",
       "request": "launch",
-      "name": "Context Bun",
+      "name": "Context bun",
       "program": "bun-debug",
       "args": ["bun", "--use=next"],
       "cwd": "/Users/jarred/Build/context/www",
@@ -345,7 +345,7 @@
     {
       "type": "lldb",
       "request": "launch",
-      "name": "Bun-hello",
+      "name": "bun-hello",
       "program": "bun-debug",
       "args": [],
       "cwd": "${workspaceFolder}/packages/bun-hello",