feat: more prompt position strategies (#1280)

* feat: allow `prompt_position` for `vertical` layout strategy

* feat: allow `prompt_position` for `bottom_pane` layout strategy

* stylua

* [docgen] Update doc/telescope.txt
skip-checks: true

* refactor: switch to `string.format`

* stylua

* feat: allow `prompt_position` for `center` layout strategy

* feat: handle user defined `prompt_position` within themes

* [docgen] Update doc/telescope.txt
skip-checks: true

* fix: tweak `center` layout

- ensure `prompt` title is visible when `prompt_position="bottom"`

* fix: refactor `center` tweak

- move title to bottom of picker when `prompt_position="bottom"`

* fix: tweak `bottom_pane` layout

* stylua

Co-authored-by: Github Actions <actions@github>

lua/telescope/config.lua

@@ -87,6 +87,7 @@ local layout_config_defaults = {
   vertical = {
     width = 0.8,
     height = 0.9,
+    prompt_position = "bottom",
     preview_cutoff = 40,
   },
 
@@ -94,6 +95,7 @@ local layout_config_defaults = {
     width = 0.8,
     height = 0.9,
     preview_cutoff = 40,
+    prompt_position = "top",
   },
 
   cursor = {
@@ -104,6 +106,7 @@ local layout_config_defaults = {
 
   bottom_pane = {
     height = 25,
+    prompt_position = "top",
   },
 }