Terminal theming (#485)

* init

* use setStyleVar

* backend implementation. scrope level terminal theming.

* only invoke this.applyTermTheme for keys that are updated. command runner for global term theme

* invoke applyTermTheme for global terminal themes as well

* fix nil error

* fix issue were theme can't be found

* fix issue where selected termtheme is not set as default value

* term theme switcher for session

* do not force reload after setting css vars

* fix issues. screenview terminal theme switcher

* remove debugging code

* move getTermThemes to util

* fix global theme reset

* fix workspace theme reset

* fix screenview terminal theme reset issue

* cleanup

* do not apply theme if theme hasn't changed

* do not apply theme if theme hasn't changed in workspace view

* cleanup

* cleanup

* force reload terminal

* fix inconsistency

* fix reset issue

* add a mobx reaction so that theming working when switching sessions

* workig reset

* simplify and cleanup

* refactor

* working global and session terminal theming

* add check

* perf improvement

* more perf improvements

* put reaction componentDidUpdate to make sure ref is already associated to the element

* cleanup

* fix issue where session theme is overriden by global theme on reload

* reduce flickering on reload

* more on reducing flickering on reload

* cleanup

* more cleanup

* fix file not found when no global theme is set

* screen level terminal theming

* update comment

* re-render terminal in history view. cleanup.

* cleanup

* merge main

wavesrv/pkg/sstore/sstore.go

@@ -250,9 +250,10 @@ type ClientOptsType struct {
 }
 
 type FeOptsType struct {
-	TermFontSize   int    `json:"termfontsize,omitempty"`
-	TermFontFamily string `json:"termfontfamily,omitempty"`
-	Theme          string `json:"theme,omitempty"`
+	TermFontSize   int               `json:"termfontsize,omitempty"`
+	TermFontFamily string            `json:"termfontfamily,omitempty"`
+	Theme          string            `json:"theme,omitempty"`
+	TermTheme      map[string]string `json:"termtheme"`
 }
 
 type ReleaseInfoType struct {