Mass renaming proposal

Personne n'a encore pris cette 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.

Commencez par examiner les paramètres, les codes de diagnostic et les renommages d’erreurs de syntaxe proposés dans cette issue, ainsi que les issues liées #1364 et #1384. Déterminez d’abord quels noms et changements de fonctionnalité sont acceptés ; pour considérer la tâche comme terminée, il faudrait un plan de renommage complet et approuvé, plutôt qu’une modification isolée.

Rédigé par le modèle d'indexation à partir du texte de l'issue.