chore: update neovim config and mcp servers (#283)

Improve base configuration for `neovim`:

* [`lsp`] Configure `gopls`
* [`lsp`] Update `openapi` schema reference
* [`colorscheme`] Update `gruvbox-material` configuration

Add new `mcp` servers:

* `github`
* `memoby-bank`
* `sequential-thinking`

Reviewed-on: #283
Co-authored-by: Joao P Dubas <joao.dubas+gitea@gmail.com>
Co-committed-by: Joao P Dubas <joao.dubas+gitea@gmail.com>

config/mcphub/servers.json

@@ -28,6 +28,20 @@
 				"mcp-server-git"
 			]
 		},
+		"github": {
+			"command": "docker",
+			"args": [
+				"run",
+				"-i",
+				"--rm",
+				"-e",
+				"GITHUB_PERSONAL_ACCESS_TOKEN",
+				"ghcr.io/github/github-mcp-server"
+			],
+			"env": {
+				"GITHUB_PERSONAL_ACCESS_TOKEN": "${GH_TOKEN}"
+			}
+		},
 		"memory": {
 			"command": "pnpm",
 			"args": [
@@ -35,6 +49,20 @@
 				"@modelcontextprotocol/server-memory@latest"
 			]
 		},
+		"memory-bank": {
+			"command": "pnpm",
+			"args": [
+				"dlx",
+				"@allpepper/memory-bank-mcp@latest"
+			]
+		},
+		"sequential-thinking": {
+			"command": "pnpm",
+			"args": [
+				"dlx",
+				"@modelcontextprotocol/server-sequential-thinking@latest"
+			]
+		},
 		"serena": {
 			"command": "uvx",
 			"arg": [
@@ -52,4 +80,5 @@
 			]
 		}
 	}
+	"nativeMCPServers": []
 }