... also in arithmetic matrix operations.

(combination of 4 commits):

move ConvertStringToValue() implementation from ScInterpreter to ScGlobal

In preparation of matrix calculations to use string conversion
configuration and UI markers for cells containing strings that could be
numeric values.

Change-Id: Ifa9e45853dded249fa741c050ae1f106365f99ea
(cherry picked from commit 329496c1)

add half decoupled ScInterpreter::ConvertStringToValue()

... for back calls of ScMatrix in preparation of tdf#91453

Change-Id: Ife94d1675c1bc7c5611586e3f352ff69264469d7
(cherry picked from commit 6516d5e2)

Resolves: tdf#91453 use configuration of text to number conversion

... also in arithmetic matrix operations.

Change-Id: Ia00054d0af383e225d9d40b59da2dc28a817b65a
(cherry picked from commit 466a20ef)

Resolves: tdf#91453 use configuration of text to number conversion

... also in arithmetic matrix operations if both operands are matrix.

Change-Id: I84609656b166b4e059d9496a5ed732a96e731164
(cherry picked from commit 778d03b5)
Reviewed-on: https://gerrit.libreoffice.org/19172Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
Tested-by: Markus Mohrhard <markus.mohrhard@googlemail.com>