feat(mise): Support tools with custom mise params (e.g. tea)

Replace the hardcoded 'tea' special case in mise-tools with a generic
mechanism: a tool entry in tools.yaml/hosts.yaml can now be either a
plain string ("latest") or a map keyed by tool name whose value holds
mise params (version, url, asset_pattern, ...). This generalizes to
any future tool needing more than "latest", instead of requiring a
new hardcoded branch per tool.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.chezmoidata/tools.yaml

@@ -19,8 +19,9 @@ tools:
       - lazygit
       - delta
       - gh
-      - tea
-      # tea = { version = "0.14.2", url = 'https://gitea.com/gitea/tea/releases/download/v{{- "{{" }} version {{ "}}" -}}/tea-{{- "{{" }} version {{ "}}" -}}-{{- "{{" }} os() {{ "}}" -}}-{{- "{{" }} arch(x64="amd64") {{ "}}" -}}.xz' }
+      - tea:
+          version: "0.14.2"
+          url: "https://gitea.com/gitea/tea/releases/download/v{{ version }}/tea-{{ version }}-{{ os() }}-{{ arch(x64='amd64') }}.xz"
       - jq
       - yq
       - shellcheck