Mass renaming proposal

Nadie ha tomado este issue todavía.

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.

Empieza revisando los ajustes, códigos de diagnóstico y cambios de nombre de errores de sintaxis propuestos en este issue, junto con los issues vinculados #1364 y #1384. Determina primero qué nombres y cambios de funcionalidad se aceptan; para darlo por terminado se requeriría un plan de renombrado completo y acordado, no una modificación aislada.

Escrito por el modelo de indexación a partir del texto del issue.