Implementation of the new Equitherm algorithm (#146)

* feat: new equitherm algorithm and chart for it (#144)

* refactor: refactoring after #144

* refactor: cosmetic changes (equitherm chart)

* chore: fix typo

* refactor: cosmetic changes

* chore: remove unused files

* chore: resolve conflicts

* refactor: added notes for equitherm parameters

* fix: decimation for Equitherm chart fixed; chartjs updated

* style: HTML code formatting

* chore: added additional description of the ``T`` parameter for Equitherm

* flx: typo

* refactor: after merge

---------

Co-authored-by: P43YM <ip43ym@gmail.com>

src_data/locales/en.json

@@ -371,11 +371,26 @@
       },
 
       "equitherm": {
-        "n": "N factor",
-        "k": "K factor",
-        "t": {
+        "slope": {
+          "title": "Slope",
+          "note": "Heat loss compensation. Main tuning parameter."
+        },
+        "exponent": {
+          "title": "Exponent",
+          "note": "Radiator efficiency.  Typical values: <code>1.1</code> - Floor heating, <code>1.2</code> - Cast iron, <code>1.3</code> - Panel radiators, <code>1.4</code> - Convectors."
+        },
+        "shift": {
+          "title": "Shift",
+          "note": "Compensates for additional heat losses (e.g., in pipes) or extra heat sources."
+        },
+        "targetDiffFactor": {
           "title": "T factor",
-          "note": "Not used if PID is enabled"
+          "note": "Not used if PID is enabled. Adds to the setpoint the difference between the target and current indoor temp: <code>setpoint = setpoint + ((target - indoor) * T)</code>."
+        },
+        "chart": {
+          "targetTemp": "Target indoor temperature",
+          "setpointTemp": "Heat carrier temperature",
+          "outdoorTemp": "Outdoor temperature"
         }
       },