Mass renaming proposal

還沒有人認領這個 Issue。

There are a number of settings, diagnostics, and more that have unclear names that I think can be improved. This issue serves to propose new names for these items so that they can all be tracked in one place and implemented at once to minimize the number of breaking releases that would need to be released.

## Settings
- [ ] `completion.displayContext` -> `completion.peekDefinition`
- There is already a `Peek Definition` command in VS Code that has a similar function and I think naming it the same will help people understand its function without confusing the two as they are triggered entirely differently.
- [ ] `diagnostics.disable` -> [**REMOVE**](https://github.com/sumneko/lua-language-server/issues/1364)
- [ ] `diagnostics.groupFileStatus` -> [**REMOVE**](https://github.com/sumneko/lua-language-server/issues/1364)
- [ ] `diagnostics.groupSeverity` -> [**REMOVE**](https://github.com/sumneko/lua-language-server/issues/1364)
- [ ] `diagnostics.ignoreFiles` -> `diagnostics.diagnoseIgnored`
- [ ] `diagnostics.libraryFiles` -> `diagnostics.diagnoseLibraries`
- [ ] `diagnostics.neededFileStatus` -> `diagnostics.config` [(Rework functionality)](https://github.com/sumneko/lua-language-server/issues/1364)
- [ ] `diagnostics.severity` [(Rework functionality)](https://github.com/sumneko/lua-language-server/issues/1364)
- [ ] `diagnostics.workspaceDelay` -> `diagnostics.delay`
- [ ] `hint.setType` -> `hint.assignType`
- [ ] `hover.enumsLimit` -> `hover.typesLimit`
- [ ] `hover.previewFields` -> `hover.peekFields`
- [ ] `runtime.special` -> `runtime.aliases`
- [ ] `workspace.checkThirdParty` -> [`workspace.checkEnvConfigs`](https://github.com/sumneko/lua-language-server/issues/1384)
- [ ] `workspace.ignoreDir` -> `workspace.ignore`
- [ ] `workspace.library` -> `workspace.libraries`
- [ ] `workspace.maxPreload` -> `workspace.maxFiles`
- [ ] `workspace.preloadFileSize` -> `workspace.maxFileSize`
- [ ] `workspace.userThirdParty` -> [`workspace.envConfig`](https://github.com/sumneko/lua-language-server/issues/1384)

## Diagnostics
I imagine there is a good reason `abiguity-1` is named how it is 😄 I see they all have at least 1 hyphen so I guess that is a limitation with how they are parsed?

- [ ] `unknown-diag-code` -> `unknown-diagnostic`
- [ ] `cast-local-type` -> `local-cast-mismatch`

## Syntax Errors
Luckily these can probably be changed with very little impact on the user and most people likely would not have any settings related to these.
- [ ] `err-assign-as-eq` -> `assign-with-equals`
- [ ] `err-c-long-comment` -> `multiline-comment-prefix`
- [ ] `err-comment-prefix` -> `comment-prefix`
- [ ] `err-do-as-then` -> `then-as-do`
- [ ] `err-eq-as-assign` -> `equality-with-assign`
- [ ] `err-esc` -> `unknown-escape`
- [ ] `err-nonstandard-symbol` -> `non-standard-symbol`
- [ ] `err-then-as-do` -> `do-as-then`
- [ ] `exp-in-action` -> `unexpected-expression`
- [ ] `keyword` -> `reserved`
- [ ] `miss-esc-x` -> `miss-hex-value`
- [ ] `miss-exp` -> `miss-expression`

`newfield-call` and `newline-call` are not easy to understand but I can't think of anything that does a better job 🤔

~~I don't even know what these do: `unexpect-efunc-name`, `unexpect-lfunc-name`~~

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Please let me know what you think and feel free to suggest other names.

首先檢視此 issue 中提出的設定、診斷代碼和語法錯誤重新命名，以及連結的 issues #1364 和 #1384。首先確定哪些名稱和功能變更已獲接受；要視為完成，需要一份經過同意的完整重新命名計畫，而不是孤立的修改。

由索引模型根據 Issue 內容生成。